Year	% of children ages 12-23 months
1980	5.365430016638267
1981	9.624345712512213
1982	10.918129513112602
1983	13.818765027165911
1984	19.206755124038533
1985	24.08682774129109
1986	29.61757472944168
1987	34.602928621422684
1988	39.486830664900246
1989	49.01621707397631
1990	58.62405022994437
1991	51.98722071710291
1992	51.547498263485174
1993	50.4820558477637
1994	55.1500472393722
1995	56.79961839612745
1996	55.0913285607068
1997	54.896551682117575
1998	55.73944531701733
1999	55.97721267882407
2000	58.339156415985
2001	58.77615110919281
2002	59.667564892728485
2003	62.631409429416394
2004	66.3884469681247
2005	67.17631321562119
2006	68.35727869978588
2007	68.9411262571245
2008	71.13772757546916
2009	73.52532115569694
2010	72.25752336753962
2011	73.61891768109506
2012	72.49185894489662
2013	71.95912906240133
2014	73.5724883934759
2015	73.60781200197265
2016	76.03256980094586
2017	76.40415081341713
2018	78.01173976072337
2019	79.48480342844633
2020	76.89335841322357
2021	75.0484299233596
2022	76.22207875137624