TABLE 1.

Age and regional distribution of included men from 2011 through 2017^a

	2011	2012	2013	2014	2015	2016	2017
Nb	4.90	5.06	5.14	4.79	4.67	4.66	4.55
Age
30–34	11.7%	13.1%	12.0%	12.2%	12.4%	12.7%	13.0%
35–39	13.6%	13.3%	13.4%	13.5%	13.5%	13.8%	14.0%
40–44	15.2%	15.4%	15.5%	15.5%	15.2%	14.8%	14.5%
45–49	16.5%	16.2%	16.0%	15.8%	15.7%	15.9%	16.0%
50–54	16.7%	16.7%	16.7%	16.8%	16.8%	16.5%	16.1%
55–59	15.2%	15.8%	15.6%	15.7%	15.8%	15.8%	15.7%
60–64	11.0%	10.7%	10.6%	10.5%	10.6%	10.5%	10.6%
Region
NE	17.4%	17.2%	16.9%	18.1%	18.9%	19.0%	18.8%
MW	22.0%	21.5%	21.8%	22.4%	22.4%	22.2%	23.6%
S	39.2%	38.9%	39.0%	41.7%	40.4%	40.3%	40.3%
W	21.1%	21.8%	22.0%	17.5%	18.1%	18.3%	17.0%

^a NE, Northeast; MW, Midwest; S, South; W, West; ^bN, number of enrollees in millions.