Year	% of children ages 12-23 months
1980	37.21265107680477
1981	42.271417939569226
1982	46.65813026958145
1983	49.41876685284756
1984	56.0594661244061
1985	55.584102792978506
1986	56.167405721726475
1987	58.87478545475161
1988	62.34028995220682
1989	63.87428459449808
1990	68.09936890392366
1991	77.7039533723385
1992	77.20883898825447
1993	78.60638483610259
1994	80.072278151733
1995	83.14395564043957
1996	81.65275989706181
1997	82.79187123300419
1998	85.68404301711385
1999	88.58838094674348
2000	90.62430850232442
2001	89.93771362533778
2002	91.31664904162277
2003	92.5646197487581
2004	93.21467791059099
2005	93.57878865130907
2006	93.48453755989554
2007	92.9185927657464
2008	92.13388384524582
2009	93.75723532474211
2010	93.30647033388593
2011	92.89642005704951
2012	93.21359937303237
2013	90.05998407398299
2014	88.7035167473879
2015	89.89113161583296
2016	89.55821782387481
2017	84.75532856180948
2018	86.02479044891224
2019	79.56501533459303
2020	75.63431907626516
2021	75.15234894946043
2022	78.93622152076412