ssa-gov/www.ssa.gov/data/actuarial-note-159-table-6.csv

1	FISCAL YEAR	TOTAL	UNDER 18	AGE 18+
2	2006	2.75	2.03	2.75
3	2007	2.88	2.17	2.88
4	2008	2.74	2.25	2.75
5	2009	2.76	1.76	2.77
6	2010	2.55	1.68	2.55
7	2011	2.5	1.87	2.5
8	2012	2.45	1.43	2.46
9	2013	2.41	1.33	2.41
10	2014	2.49	2.11	2.49
11	2015	2.59	2.12	2.59
12	2016	2.71	2.1	2.71
13	2017	2.69	2.38	2.69