From 2002-2021 (the last 20 years for which data is available), the total U.S. real gross domestic product (GDP adjusted for inflation, or Real GDP) increased by approximately 45%, from $13.5 trillion to $19.6 trillion in chained 2012 dollars. On a per capita basis, county-level real GDP increased by an average of 36% over the past 20 years, with a range of growth from -77% (Brooks County, Texas) to 3,950% (Culberson County, Texas).