Ziguinchor, Ziguinchor Region Airbnb Market Data 2026: STR Report & Statistics
How much can you earn on Airbnb in Ziguinchor, Ziguinchor Region? Based on AirROI's 2026 dataset (February 2025 – January 2026), the short answer is $1,679 per year — at a $51 nightly rate, 27.6% occupancy, and a N/A RevPAR.
With just 19 active listings, Ziguinchor is a micro-market where selective demand that rewards strong listing quality and pricing strategy. Supply grew 216.7% over the past year, yet revenue and nightly rates both trended upward — a signal that traveler demand is outpacing new inventory rather than being diluted by it. For hosts, pricing power remains intact even as competition increases.
Regulation is low with minimal registration requirements, pointing to an operator-friendly environment. In a market this size, differentiated listings with strong reviews can capture outsized returns relative to the competition.
Table of Contents [hide] [show]
What Are the Key Airbnb Metrics in Ziguinchor?
In Ziguinchor, the headline Airbnb metrics are $1,679 in average annual revenue,27.6% occupancy, $51 ADR, and $0 in RevPAR, and guests book about 14 days in advance.
How Much Do Airbnb Hosts Earn Monthly in Ziguinchor?
Understanding the monthly revenue variations for Airbnb listings in Ziguinchor is key to maximizing your short term rental income potential. Seasonality significantly impacts earnings. Our analysis, based on data from the past 12 months, shows that the peak revenue month for STRs in Ziguinchor is typically July, while October often presents the lowest earnings, highlighting opportunities for strategic pricing adjustments during shoulder and low seasons. Explore the typical Airbnb income in Ziguinchor across different performance tiers:
- Best-in-class properties (Top 10%) achieve $700+ monthly, often utilizing dynamic pricing and superior guest experiences.
- Strong performing properties (Top 25%) earn $338 or more, indicating effective management and desirable locations/amenities.
- Typical properties (Median) generate around $168 per month, representing the average market performance.
- Entry-level properties (Bottom 25%) see earnings around $98, often with potential for optimization.
Average Monthly Airbnb Earnings Trend in Ziguinchor
What Is the Monthly Airbnb Occupancy Rate in Ziguinchor?
Maximize your bookings by understanding the Ziguinchor STR occupancy trends. Seasonal demand shifts significantly influence how often properties are booked. Typically, Augustsees the highest demand (peak season occupancy), while October experiences the lowest (low season). Effective strategies, like adjusting minimum stays or offering promotions, can boost occupancy during slower periods. Here's how different property tiers perform in Ziguinchor:
- Best-in-class properties (Top 10%) achieve 48%+ occupancy, indicating high desirability and potentially optimized availability.
- Strong performing properties (Top 25%) maintain 30% or higher occupancy, suggesting good market fit and guest satisfaction.
- Typical properties (Median) have an occupancy rate around 19%.
- Entry-level properties (Bottom 25%) average 9% occupancy, potentially facing higher vacancy.
Average Monthly Occupancy Rate Trend in Ziguinchor
What Is the Average Airbnb Nightly Rate in Ziguinchor?
Effective short term rental pricing strategy in Ziguinchor involves understanding monthly ADR fluctuations. The Average Daily Rate (ADR) for Airbnb in Ziguinchor typically peaks in January and dips lowest during August. Leveraging Airbnb dynamic pricing tools or strategies based on this seasonality can significantly boost revenue. Here's a look at the typical nightly rates achieved:
- Best-in-class properties (Top 10%) command rates of $109+ per night, often due to premium features or locations.
- Strong performing properties (Top 25%) achieve nightly rates of $51 or more.
- Typical properties (Median) charge around $39 per night.
- Entry-level properties (Bottom 25%) earn around $24 per night.
Average Daily Rate (ADR) Trend by Month in Ziguinchor
What Is the RevPAR for Airbnb in Ziguinchor?
RevPAR in Ziguinchor is currently N/A. Because RevPAR combines nightly rates with realized occupancy, it is one of the cleanest ways to compare how efficiently listings turn demand into revenue across the market.
- Entry-level properties (Bottom 25%) see N/A RevPAR.
- Typical properties (Median) generate N/A RevPAR.
- Strong performers (Top 25%) earn N/A RevPAR.
- Best-in-class (Top 10%) achieve N/A RevPAR.
Average Monthly RevPAR Trend in Ziguinchor
RevPAR Insights for Ziguinchor
- RevPAR peaks in Jan and bottoms out in Jan, mirroring the broader seasonal demand pattern and suggesting opportunities for dynamic pricing.
Recommendations for Hosts
- Track your own RevPAR monthly against these Ziguinchor benchmarks. If your RevPAR falls below the median of N/A, examine whether low occupancy or low ADR is the primary drag.
- Use RevPAR rather than revenue alone when comparing properties of different sizes — it normalizes for available nights and gives a more accurate picture of performance.
Get Live Ziguinchor Market Intelligence 👇
Explore Real-time Analytics
When Is the Peak Season for Airbnb in Ziguinchor?
Ziguinchor's peak Airbnb season falls in July, August, December, while the softest stretch is June, September, October. Overall, the market shows highly seasonal trends requiring careful strategy, which should guide pricing, minimum stays, and cash-flow planning.
Peak Season (July, August, December)
- Revenue averages $452 per month
- Occupancy rates average 31.6%
- Daily rates average $56
Shoulder Season
- Revenue averages $258 per month
- Occupancy maintains around 23.3%
- Daily rates hold near $55
Low Season (June, September, October)
- Revenue drops to average $148 per month
- Occupancy decreases to average 13.2%
- Daily rates adjust to average $49
Seasonality Insights for Ziguinchor
- Airbnb seasonality in Ziguinchor is pronounced. Revenue swings sharply between peak and low months, which means pricing strategy, minimum-stay settings, and cash reserves all need to account for extended slower periods.
- During the high season, the absolute peak month showcases Ziguinchor's highest earning potential, with monthly revenues climbing to $499, occupancy reaching 34.4%, and ADRs peaking at $81.
- Conversely, the slowest single month marks the market's lowest point — revenue may dip to $134, occupancy could drop to 10.8%, and ADRs may adjust to $46.
- Lower occupancy paired with meaningful seasonality means hosts in Ziguinchor need to maximize every peak-season booking and seriously consider whether off-season pricing adjustments or minimum-stay changes can capture incremental revenue.
Seasonal Strategies for Maximizing Profit
- Peak Season: Maximize revenue through premium pricing and potentially longer minimum stays. Ensure high availability and consider tightening cancellation policies to reduce last-minute gaps.
- Low Season: Offer competitive pricing, extended-stay discounts, and flexible cancellation policies. Target off-season travelers like remote workers, budget-conscious guests, and travelers with flexible schedules.
- Shoulder Seasons: Implement dynamic pricing that bridges peak and low rates. Target weekend travelers, local events, and business visitors. Slightly more flexible terms than peak season can help maintain occupancy without deep discounting.
- In a highly seasonal market like Ziguinchor, building a cash reserve during the top months is essential for covering fixed costs during the slow period. Automated pricing tools can help capture demand shifts in real time.
Do You Need a License for Airbnb in Ziguinchor?
Low regulation and minimal registration activity in Ziguinchor, Ziguinchor Region, Senegal point to an operator-friendly environment. That said, even low-regulation markets may have tax collection requirements, safety standards, or HOA rules that affect short-term rental operations. Always verify the latest short-term rental regulations and Airbnb license requirements directly with local government authorities for Ziguinchor to ensure full compliance before hosting.
(Source: AirROI data, 2026, finding no licensed listings among those analyzed)
What Are the Best Neighborhoods for Airbnb in Ziguinchor?
With a compact short-term rental market, Ziguinchor gives early-mover hosts an advantage in the right neighborhoods. The areas listed below are where guest demand and local attractions converge — a useful lens for investors evaluating whether to enter this market and where to position their listing.
| Neighborhood / Area | Why Host Here? (Target Guests & Appeal) | Key Attractions & Landmarks |
|---|---|---|
| Ziguinchor City Center | Heart of Ziguinchor with access to local markets, restaurants, and cultural sites. Ideal for guests wanting to experience the local lifestyle and activities. | Place de L'Indépendance, Ziguinchor Cathedral, Local Markets, Musee de la Mer, Ricefields Tours |
| Cap Skirring | Popular coastal area known for stunning beaches and resorts. Attracts tourists for relaxation and water activities, perfect for beach lovers and families. | Cap Skirring Beach, Cape Verdean Village, Water Sports, Dune du Pyla, Local Seafood Restaurants |
| Kolda Sub-Region | Rich in natural beauty and cultural experiences. Great for eco-tourists and those looking to explore the rural Senegalese lifestyle. | Natural Parks, Local Villages, Eco-Tourism Trails, Cultural Festivals, Baobab Trees |
| Bignona | Known for its agricultural landscapes and traditional villages. Offers a unique experience for guests interested in Senegal’s rural culture and nature. | Local Farms Tours, Cultural Tours, Community Festivals, Mandingue Culture, Traditional Craft Markets |
| Oussouye | A picturesque town known for its nature reserves and eco-tourism. Ideal for guests wanting to retreat into nature and enjoy local wildlife. | Bajo de Oussouye Reserve, Eco-Lodges, Local Craft Markets, Kayaking Tours, Bird Watching |
| Nyassia | A tranquil area perfect for guests wanting to escape to nature. Known for its beaches and lush landscapes. | Beaches, Waterfalls, Cultural Experiences, Fishing Locales, Nature Trails |
| The Casamance River | Offers serene views and a chance to engage in river activities. Suitable for adventurers and nature lovers. | Boat Tours, Fishing, Nature Walks, Cultural Encounters, Scenic Views |
| Diembéring | A small and authentic village known for its proximity to the ocean and traditional Senegalese lifestyle. Great for cultural immersion and relaxation. | Traditional Fishing Villages, Local Cuisine, Beaches, Cultural Festivals, Scenic Walks |
With 8 distinct neighborhoods showing meaningful short-term rental activity, Ziguinchor offers diversification within a single market. Investors can tailor their strategy — from high-turnover tourist zones to quieter residential areas that attract longer stays and remote workers.
What Types of Properties Are on Airbnb in Ziguinchor?
Room Type Distribution
Property Type Distribution
Market Composition Insights for Ziguinchor
- The Ziguinchor Airbnb market composition is heavily skewed towards Private Room listings, which make up 52.6% of the 19 active rentals. This indicates strong guest preference for privacy and space.
- Looking at the property type distribution in Ziguinchor, Apartment/Condo properties are the most common (57.9%), reflecting the local real estate landscape.
- Houses represent a significant 15.8% portion, catering likely to families or larger groups.
- The presence of 26.3% Hotel/Boutique listings indicates integration with traditional hospitality.
Ziguinchor Airbnb Room Capacity Analysis (2026): Bedroom Distribution
Distribution of Listings by Number of Bedrooms
Room Capacity Insights for Ziguinchor
- The dominant room capacity in Ziguinchor is 1 bedroom listings, making up 21.1% of the market. This suggests a strong demand for properties suitable for couples or solo travelers.
- Together, 1 bedroom and 2 bedrooms properties represent 42.2% of the active Airbnb listings in Ziguinchor, indicating a high concentration in these sizes.
- A significant 21.1% of listings offer 3+ bedrooms, catering to larger groups and families seeking more space in Ziguinchor.
Ziguinchor Vacation Rental Guest Capacity Trends (2026)
Distribution of Listings by Guest Capacity
Guest Capacity Insights for Ziguinchor
- The most common guest capacity trend in Ziguinchor vacation rentals is listings accommodating 8+ guests (15.8%). This suggests the primary traveler segment is likely larger groups.
- Properties designed for 8+ guests and 2 guests dominate the Ziguinchor STR market, accounting for 31.6% of listings.
- 26.3% of properties accommodate 6+ guests, serving the market segment for larger families or group travel in Ziguinchor.
- On average, properties in Ziguinchor are equipped to host 3.0 guests.
What Amenities Do Airbnb Guests Expect in Ziguinchor?
Amenity Prevalence
Amenity Insights for Ziguinchor
- Popular amenities like Wifi, TV, Air conditioning are common but not universal. Offering these can provide a competitive edge.
- Warning: Wifi is not universally provided but is considered essential globally. Ensure reliable Wifi is offered.
Recommendations for Hosts
- Consider adding popular differentiators like Wifi or TV to increase appeal.
- Highlight unique or less common amenities you offer (e.g., hot tub, dedicated workspace, EV charger) in your listing description and photos.
- Regularly check competitor amenities in Ziguinchor to stay competitive.
Dive Deeper: Advanced Ziguinchor STR Market Data (2026)
Ready to unlock more insights? AirROI provides access to advanced metrics and comprehensive Airbnb data for Ziguinchor. Explore detailed analytics beyond this report to refine your investment strategy, optimize pricing, and maximize your vacation rental profits.
Explore Advanced MetricsZiguinchor Airbnb Guest Demographics & Profile Analysis (2026)
Guest Profile Summary for Ziguinchor
- The typical guest profile for Airbnb in Ziguinchor consists of predominantly international visitors (97%), with top international origins including Spain, typically belonging to the Post-2000s (Gen Z/Alpha) group (50%), primarily speaking English or French.
- Domestic travelers account for 3.5% of guests.
- Key international markets include France (49.4%) and Spain (5.9%).
- Top languages spoken are English (35.5%) followed by French (30.4%).
- A significant demographic segment is the Post-2000s (Gen Z/Alpha) group, representing 50% of guests.
Recommendations for Hosts
- Focus marketing internationally, particularly towards travelers from Spain.
- Tailor amenities and listing descriptions to appeal to the dominant Post-2000s (Gen Z/Alpha) demographic (e.g., highlight fast WiFi, smart home features, local guides).
- Highlight unique local experiences or amenities relevant to the primary guest profile.
- Consider seasonal promotions aligned with peak travel times for key origin markets.
Ziguinchor Airbnb Booking Patterns (2026): Available vs. Booked Days
Available Days Distribution
Booked Days Distribution
Booking Pattern Insights for Ziguinchor
- The most common availability pattern in Ziguinchor falls within the 271-366 days range, representing 100% of listings. This suggests many properties have significant open periods on their calendars.
- Approximately 100.0% of listings show high availability (181+ days open annually), indicating potential for increased bookings or specific owner usage patterns.
- For booked days, the 31-90 days range is most frequent in Ziguinchor (68.4%), reflecting common guest stay durations or potential owner blocking patterns.
How Far in Advance Do Guests Book Airbnb in Ziguinchor?
Average Booking Lead Time by Month
Booking Lead Time Insights for Ziguinchor
- The overall average booking lead time for vacation rentals in Ziguinchor is 14 days.
- Guests book furthest in advance for stays during December (average 30 days), likely coinciding with peak travel demand or local events.
- The shortest booking windows occur for stays in September (average 4 days), indicating more last-minute travel plans during this time.
- Seasonally, Winter (20 days avg.) sees the longest lead times, while Summer (6 days avg.) has the shortest, reflecting typical travel planning cycles.
Recommendations for Hosts
- Use the overall average lead time (14 days) as a baseline for your pricing and availability strategy in Ziguinchor.
- For December stays, consider implementing length-of-stay discounts or slightly higher rates for bookings made less than 30 days out to capitalize on advance planning.
- During September, focus on last-minute booking availability and promotions, as guests book with very short notice (4 days avg.).
- Target marketing efforts for the Winter season well in advance (at least 20 days) to capture early planners.
- Monitor your own booking lead times against these Ziguinchor averages to identify opportunities for dynamic pricing adjustments.
Ziguinchor Airbnb Minimum Stay Requirements Analysis
Distribution of Listings by Minimum Night Requirement
1 Night
16 listings
84.2% of total
2 Nights
2 listings
10.5% of total
30+ Nights
1 listings
5.3% of total
Key Insights
- The most prevalent minimum stay requirement in Ziguinchor is 1 Night, adopted by 84.2% of listings. This highlights the market's preference for shorter, flexible bookings.
- A strong majority (94.7%) of the Ziguinchor Airbnb data shows acceptance of very short stays (1-2 nights), indicating a dynamic, high-turnover market.
Recommendations
- Align with the market by considering a 1 Night minimum stay, as 84.2% of Ziguinchor hosts use this setting.
- Explore offering discounts for stays of 30+ nights to attract the 5.3% of the market seeking extended stays.
- Adjust minimum nights based on seasonality – potentially shorter during low season and longer during peak demand periods in Ziguinchor.
Ziguinchor Airbnb Cancellation Policy Trends Analysis (2026)
Flexible
18 listings
94.7% of total
Moderate
1 listings
5.3% of total
Cancellation Policy Insights for Ziguinchor
- The prevailing Airbnb cancellation policy trend in Ziguinchor is Flexible, used by 94.7% of listings.
- The market strongly favors guest-friendly terms, with 100.0% of listings offering Flexible or Moderate policies. This suggests guests in Ziguinchor may expect booking flexibility.
Recommendations for Hosts
- Consider adopting a Flexible policy to align with the 94.7% market standard in Ziguinchor.
- Given the high prevalence of Flexible policies (94.7%), offering this can enhance booking appeal, especially during shoulder seasons.
- Regularly review your cancellation policy against competitors and market demand shifts in Ziguinchor.
What Do the Top Airbnb Listings in Ziguinchor Look Like?
Benchmark your potential! Explore examples of top-performing Airbnb properties in Ziguinchorbased on Trailing Twelve Month (TTM) revenue. Analyze their characteristics, revenue, occupancy rate, and ADR to understand what drives success in this market.
Meublé Mboko, INNA
Entire Place • 2 bedrooms
Furnished Kassumay, INNA
Entire Place • 1 bedroom
Villa Bapalay
Entire Place • 6 bedrooms
Furnished Essamay, INNA
Entire Place • 1 bedroom
Appartement Mbootaay • Djibekel Homes
Entire Place • 4 bedrooms
New villa near Assane University
Entire Place • 3 bedrooms
Note: Performance varies based on location, size, amenities, seasonality, and management quality. Data reflects the past 12 months.
Who Are the Top Airbnb Hosts in Ziguinchor?
Learn from the best! This table showcases top-performing Airbnb hosts in Ziguinchor based on the number of properties managed and estimated total revenue over the past year. Analyze their scale and performance metrics.
| Host Name | Properties | Grossing Revenue | Stay Reviews | Avg Rating |
|---|---|---|---|---|
| Immeuble INNA | 3 | $9,278 | 34 | 4.83/5.0 |
| Marc | 4 | $5,946 | 168 | 4.67/5.0 |
| Marie | 2 | $3,375 | 4 | 4.67/5.0 |
| Christophe | 1 | $2,853 | 15 | 4.07/5.0 |
| Précillia | 1 | $2,190 | 1 | Not Rated |
| Pierre-Louis | 1 | $2,052 | 52 | 4.77/5.0 |
| Anne | 1 | $1,949 | 2 | Not Rated |
| Aliu | 3 | $1,292 | 8 | 4.60/5.0 |
| ELhadji Keba Ibn Abasse | 1 | $1,212 | 12 | 4.00/5.0 |
| Emeric | 1 | $1,101 | 41 | 4.68/5.0 |
Analyzing the strategies of top hosts, such as their property selection, pricing, and guest communication, can offer valuable lessons for optimizing your own Airbnb operations in Ziguinchor.
How Does Ziguinchor's Airbnb Market Compare to Nearby Cities?
How does the Ziguinchor Airbnb market stack up against its neighbors? Compare key performance metrics like average monthly revenue, ADR, and occupancy rates in surrounding areas to understand the broader regional STR landscape.
Compared with Brufut, Ziguinchor has 10 percentage points lower occupancy and about $14 higher ADR. That helps frame whether this market is winning more on demand, pricing, or both.
| Market | Active Properties | Monthly Revenue | Daily Rate | Avg. Occupancy |
|---|---|---|---|---|
| Communauté rurale de Diembéring | 101 | $515 | $102.77 | 26% |
| Sanyang | 14 | $443 | $82.78 | 29% |
| Sukuta | 158 | $437 | $75.68 | 34% |
| Brufut | 20 | $221 | $36.98 | 38% |
| Communauté rurale de Toubacouta | 11 | $203 | $49.60 | 18% |
| Serrekunda | 71 | $170 | $43.57 | 30% |
| Bissau | 13 | $119 | $40.49 | 25% |
| Communauté rurale de Kafountine | 17 | $75 | $27.69 | 24% |
Frequently Asked Questions About Airbnb in Ziguinchor
These quick answers summarize the most common investor and operator questions using AirROI's latest market data for Ziguinchor.
How much do Airbnb hosts make in Ziguinchor?
Ziguinchor hosts earn about $1,679 per year on average, with an average nightly rate of $51 and RevPAR of N/A. Those figures describe the typical revenue environment for active listings in Ziguinchor, Ziguinchor Region, not the ceiling for the best operators. Source: AirROI 2026 data, Ziguinchor market, February 2025 to January 2026.
What is the average Airbnb occupancy rate in Ziguinchor?
The average Airbnb occupancy rate in Ziguinchor is 27.6%. July is the strongest month and October is the softest, so hosts should expect demand to move meaningfully throughout the year rather than stay flat.
What is the average Airbnb daily rate in Ziguinchor?
Listings in Ziguinchor average $51 per night. The broader pricing spread also matters: lower-performing listings cluster closer to the lower quartiles, while premium homes can price materially above the city average when demand spikes or listing quality stands out.
How many Airbnb listings are active in Ziguinchor?
Ziguinchor currently has about 19 active Airbnb listings in AirROI's market dataset. That supply count helps explain how competitive the market is, how much depth there is for benchmarking, and whether the market behaves like a niche destination or a scaled urban market.
How strict are short-term rental regulations in Ziguinchor?
AirROI currently classifies the short-term rental regulation level in Ziguinchor as Low. The dataset also shows about 0.0% of listings with registration evidence. That is a market signal, not legal advice, so hosts should still confirm current licensing and compliance rules locally before listing.
What is the RevPAR for Airbnb in Ziguinchor?
RevPAR in Ziguinchor is about N/A. That metric combines pricing and occupancy into one efficiency number, so it is often a better quick benchmark than ADR alone when investors want to compare how well listings convert nightly rates into realized revenue.
Is Airbnb profitable in Ziguinchor?
Occupancy of 27.6% means Ziguinchor is a more selective market. Profitability is achievable but requires careful cost management, premium positioning, or targeting longer stays to reduce turnover. Average annual revenue is $1,679, but individual returns depend on property type, location within the city, and the host's operating efficiency.
How far in advance do guests book Airbnb in Ziguinchor?
The average booking lead time in Ziguinchor is about 14 days — a relatively short booking window, meaning most guests decide within a few weeks of their trip — dynamic pricing can capture late demand. Hosts who understand their market's booking cadence can adjust minimum stays and pricing windows accordingly.
What are the best neighborhoods for Airbnb in Ziguinchor?
Based on AirROI's analysis, some of the top neighborhoods for short-term rentals in Ziguinchor include Ziguinchor City Center, Cap Skirring, Kolda Sub-Region. Each area attracts different guest profiles — from business travelers to leisure visitors — so the best location depends on the property type and target audience a host is aiming for. See the full neighborhood breakdown above.
What type of property performs best on Airbnb in Ziguinchor?
private_room listings make up 52.6% of the active supply in Ziguinchor. The most common configuration does not always mean the most profitable — operators who identify underserved property types or bedroom counts can sometimes outperform the market average by filling a gap in local supply.
How does Ziguinchor compare to nearby Airbnb markets?
Among neighboring markets, Communauté rurale de Diembéring posts $6,184 in average annual revenue with 25.9% occupancy, compared to Ziguinchor's $1,679 and 27.6%. Comparing nearby markets helps investors understand whether a destination's performance reflects local demand or broader regional trends.
When is the peak season for Airbnb in Ziguinchor?
July is the highest-revenue month in Ziguinchor, while October is the softest. The revenue spread between them indicates a highly seasonal market — revenue in the peak month is more than double the low month, so cash-flow planning and pricing automation are critical.
About AirROI Market Data
AirROI tracks over 20 million properties across 190+ countries and maintains 15+ years of historical performance data, making it one of the deepest Airbnb and STR intelligence platforms available. The analytics pipeline aggregates listing-level data monthly — revenue, occupancy, nightly rates, RevPAR, guest demographics, booking patterns, and competitive supply — so investors and operators can benchmark any market against its own history and against neighboring destinations.
Real estate investors, property managers, financial institutions, hedge funds, tourism boards, hospitality consultants, tech platforms, and academic researchers rely on AirROI data to underwrite acquisitions, optimize pricing, model macro trends, and conduct peer-reviewed research. Data is available through in-depth market reports like this one and the Airbnb API with 22 endpoints and an Airbnb MCP Server for AI agents.
AirROI proprietary analytics as of 2026-01-31. Metrics reflect trailing twelve-month aggregates from active listings. Revenue figures are market averages, not projections. Neighborhood descriptions are AI-generated and reviewed for accuracy. For full methodology, see the data methodology page.