Supplementary notes
The figures presented reflect the respective population in the United States. Statista calculated the figures based on the U.S. Census data and Simmons National Consumer Survey (NHCS).
Number of respondents (in millions): 2011: 311.58, 2012: 313.87, 2013: 316.06, 2014: 318.39, 2015: 320.74, 2017: 325.15, 2018: 327.17, 2019: 330.27, 2020 (forecast): 332.64.