Year	% of children ages 12-23 months
1980	2.8869805149203907
1981	3.856012805651058
1982	5.084959682809192
1983	8.100399424574606
1984	12.49923149878718
1985	16.970656676390117
1986	25.57682250644869
1987	34.536063432548396
1988	42.588525193387234
1989	52.668447210138964
1990	61.21399391158508
1991	55.30174736661446
1992	59.01451126236191
1993	62.955504161629385
1994	67.4405431340692
1995	69.76394883361404
1996	66.75109816707
1997	62.141525050350424
1998	61.52458355376077
1999	62.243077187137594
2000	62.54229561493175
2001	63.5876383422882
2002	63.05519721367143
2003	65.71174153766866
2004	68.60423332381579
2005	70.75896907120034
2006	71.18759458976375
2007	71.86764497705624
2008	73.79891220475521
2009	77.99010786312041
2010	79.12730730312403
2011	79.34768729035459
2012	78.71700290542809
2013	79.36351606720217
2014	80.28521157893923
2015	81.03062848185597
2016	81.96113086466937
2017	83.03283562176486
2018	84.61625432689735
2019	85.39653905431504
2020	82.8159693305123
2021	80.71366285718382
2022	84.17893280130997