For more information, see http://www.census.gov/hhes/www/hlthins/hlthins.html.
Source: US. Bureau of the Census
Release: Health Insurance Coverage
US. Bureau of the Census, Health Insurance Coverage: Coverage Rate in the East North Central Census Division (Discontinued Series) [CENCHICCOVPCT], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/CENCHICCOVPCT/, August 30, 2015.