Gross Domestic Product / Capita GAP is a monetary measure of the market value of all final goods and services in a country per human. The GDP Gap is the difference between countries.
Find your country and compare to the US economy below.
What does the % GDP GAP mean?
It is % GDP per capita ( human) of origin country compared to the USA per capita (human) . Tax revenues is generally proportional to this number which is necessary for own developmental requirements ( education, health, social care, infrastructure, defence, international trade development)
Data used is from World Bank 2022