Year	% of children ages 12-23 months
1980	7.478804803255281
1981	13.38436217506237
1982	16.737469856390756
1983	17.46841642051475
1984	18.211113782695836
1985	23.604588508278265
1986	28.74727573450056
1987	31.443602599263905
1988	38.38584411300042
1989	46.72004602468257
1990	51.35998918736962
1991	43.53245431024789
1992	41.786270525840145
1993	44.766715173160776
1994	49.42621121951712
1995	47.33315835195771
1996	48.222563329272596
1997	46.11214054478766
1998	44.98962922763123
1999	46.713774783560595
2000	50.70021630111617
2001	50.96947038140111
2002	52.90751962705672
2003	56.22468333985197
2004	59.405203623821215
2005	62.213320048079254
2006	64.40450071536131
2007	66.57528158795556
2008	67.31469762752522
2009	70.0456406246979
2010	72.15479566739945
2011	72.58890790384685
2012	71.40552519909279
2013	69.9000954283763
2014	69.88708392490531
2015	69.56674031797488
2016	69.27957452752798
2017	70.53193064750208
2018	70.55060680186017
2019	71.15752352262562
2020	70.00471731356718
2021	66.81154485164188
2022	66.10095343895857