Year	% of children ages 12-23 months
1980	6.149959395125819
1981	9.563608191150317
1982	12.21624414731222
1983	13.043743864728109
1984	16.781297771275938
1985	25.316780923607205
1986	30.427460291340328
1987	34.71237260208192
1988	41.98322953713387
1989	49.980733407705856
1990	53.7077536456496
1991	47.86936765674747
1992	44.712682314105685
1993	46.23820695293613
1994	52.46672334315132
1995	50.592847756151535
1996	51.06411675170245
1997	50.67920414607563
1998	50.33798787332736
1999	48.88396796010592
2000	50.954119554729914
2001	49.98458209817809
2002	50.13981419335923
2003	52.7457513520556
2004	55.3620805678655
2005	57.97547877326362
2006	59.646064578098816
2007	60.51895680766644
2008	65.09329989726007
2009	69.01901579562286
2010	68.42820723715774
2011	67.6444334233406
2012	65.10700059032044
2013	64.11607767658286
2014	63.66835874302748
2015	63.11791971396846
2016	64.4667692632456
2017	67.03884090960283
2018	66.67564566091772
2019	67.49131363963222
2020	66.98278052037983
2021	64.01793030094781
2022	65.2727596632094