Our Methodology
We download raw data directly from government sources — no intermediaries, no filtering, no cherry-picking. Every record in our database comes from an official public dataset.
Each source is imported into a normalized SQLite database where we compute percentiles, averages, medians, and distributions. These statistics power the calculators you see on the site.
Our data refreshes regularly from source. We track freshness metadata for each source and re-import when new data becomes available.