Year	% of children ages 12-23 months
1980	0.052884197247036455
1981	0.07602237355758483
1982	0.5753977348761116
1983	54.63097724255208
1984	60.71263364259106
1985	66.35093692710124
1986	55.44657594079143
1987	67.43856762842836
1988	82.8431575906312
1989	85.12820245873428
1990	89.37872042913475
1991	85.80552055633312
1992	82.34509553215652
1993	78.47617615378742
1994	75.20261094327961
1995	78.10395555397875
1996	83.22992264968015
1997	82.59628068471976
1998	82.88550488673434
1999	83.3954666424851
2000	82.885667141946
2001	83.31317175212511
2002	82.73660194945265
2003	83.51918764088929
2004	85.44083413550642
2005	85.50456665657933
2006	89.6643886815607
2007	89.24828265415422
2008	91.55317003227061
2009	92.85266810052973
2010	93.5116650518396
2011	93.69069682842577
2012	93.71683855847918
2013	94.71966383323368
2014	94.4216634852351
2015	94.32560810341661
2016	94.68298134446053
2017	94.48058368691653
2018	94.58868445442259
2019	93.6242441480118
2020	91.22654256226527
2021	86.19898732033778
2022	90.03600315234335