Number of health uninsured vs insured adults in the U.S. 2003-2020

Figures from 2003 to 2005 were taken from previous reports from the same source and can be found here
Notes: "Uninsured now" refers to adults who reported being uninsured at the time of the survey; "Insured now, had a gap" refers to adults who were insured at the time of survey but were uninsured at any point during the year before the survey field date; "Insured all year, underinsured" refers to adults who were insured for the full year up to and on the survey field date, but had such high out-of pocket costs or deductibles relative to their income that they were effectively underinsured.
Data: Commonwealth Fund Biennial Health Insurance Surveys (2003, 2005, 2010, 2012, 2014, 2016, 2018, 2020)