Today is the 70th anniversary of the attack on Pearl Harbor. Today is also the final day of the Medicare annual enrollment period. Only one of these topics lends itself to a market size post. Worth noting—and by way of tying these two things together a little—is the fact that anyone (now an American citizen) who was around on the day that Pearl Harbor was attacked, is now eligible for Medicare.

Today’s market size is the number of people enrolled in the Medicare health insurance system in the United States in 2010. The graphic provides data on enrollment from 1970 to 2010 and shows how this population relates to the total U.S. population over this period.

Geographic reference: United States
Year: 2010
Market size: 47.2 million
Source: “Table I.1 Medicare Enrollment Trends,” part of the statistical offerings on the Federal Government’s CMS website here.
Original source: Center for Medicare and Medicaid Services, U.S. Department of Human Health and Services
Posted on November 7, 2011