Year	% of children ages 12-23 months
1980	7.765522305843746
1981	9.42023383808679
1982	11.183021181202518
1983	13.5810594647335
1984	16.53752281431286
1985	23.702267755001202
1986	30.335127662798897
1987	37.64064706062521
1988	45.440438590132466
1989	54.2932681382744
1990	62.625108258231016
1991	57.28748211366149
1992	61.50945296837915
1993	65.3500130270737
1994	70.16863775478481
1995	71.14066421380836
1996	70.7769023644024
1997	66.4207191511491
1998	66.47854620418461
1999	67.6780895965198
2000	67.8104159499842
2001	68.35331339585503
2002	67.35251828885119
2003	69.65778497664802
2004	72.11518808652264
2005	74.40689261995936
2006	75.3150524444521
2007	75.9452854613815
2008	77.01387162110875
2009	79.93449576955952
2010	81.831901117817
2011	83.61091101332845
2012	82.73053689464463
2013	83.06277689701483
2014	84.22229981627738
2015	85.57969282152116
2016	86.3362695453976
2017	86.37455682530256
2018	87.78503154234035
2019	87.8282580915396
2020	84.86675141014284
2021	83.08407806067689
2022	86.61166979215228