Year	% of children ages 12-23 months
1980	11.651623005892786
1981	13.671780509068995
1982	16.029123799486815
1983	31.38152801943948
1984	37.915277939233754
1985	43.16282285642159
1986	46.42065928655539
1987	51.1711807616504
1988	61.17691030502834
1989	66.49275587985565
1990	74.7289220676394
1991	70.17172223198031
1992	68.73286128213512
1993	68.52309130382403
1994	70.87038177603345
1995	71.35190343372216
1996	70.28578089891137
1997	69.71344524809673
1998	69.95201050820599
1999	69.76299398068862
2000	70.49366566402803
2001	70.96171103465926
2002	70.60351596654037
2003	72.33537419460245
2004	74.55911937277921
2005	75.44774644445408
2006	76.71302296451297
2007	76.7633305792899
2008	79.63320192225208
2009	81.91551644124519
2010	82.42526312804856
2011	83.52419389385331
2012	83.29402578780294
2013	82.93273625662937
2014	83.73822264963438
2015	83.94898299019087
2016	85.13258262799965
2017	85.11530971577686
2018	85.85049160713183
2019	85.95718362066398
2020	82.59748253095405
2021	80.68206568696151
2022	83.86968145510558