For that indicator, The World Bank provides data for the USA from 1960 to 2017. The average value for the USA during that period was 5.01 percent with a minumum of 4.35 percent in 2017 and a maximum of 6.02 percent in 1961.
See the global rankings for that indicator or
use the country comparator to compare trends over time.
Definition: The population share of a particular country is measured as its population as percent of the total world population in a given year. Total population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship--except for refugees not permanently settled in the country of asylum, who are generally considered part of the population of their country of origin. The values shown are midyear estimates.