Year	% of children ages 12-23 months
1980	12.999719037472302
1981	14.937718290134507
1982	18.166447438662825
1983	21.51691382464968
1984	24.684715097573513
1985	29.66751884504129
1986	34.47783745697901
1987	41.27779748520584
1988	48.5950365337689
1989	56.6706982207249
1990	69.42005239299311
1991	63.10445239975066
1992	62.38018497658772
1993	64.61924251063834
1994	69.25654803014048
1995	72.0794937844987
1996	70.23445391658971
1997	69.52835677269104
1998	69.04221900179965
1999	68.23585915808404
2000	68.69708258301824
2001	69.17674481206048
2002	68.75425148969971
2003	70.47519437105665
2004	73.0916001454112
2005	73.69585489563595
2006	73.96307902424509
2007	73.62146746190959
2008	76.38333809507382
2009	78.7254577016381
2010	80.8297853880899
2011	83.03306134000997
2012	83.03645430310215
2013	83.33678546774824
2014	84.3348637888332
2015	84.8726405187005
2016	86.45063852108166
2017	86.31358067756545
2018	86.77791206777509
2019	87.22557002773173
2020	82.81118407150619
2021	81.22257319826655
2022	86.89296049626525