Year	% of children ages 12-23 months
1980	41.96693183734597
1981	48.76882896274095
1982	48.491619406854
1983	47.00430967555966
1984	51.490827850960926
1985	59.67283465754865
1986	60.91883646181561
1987	59.75748727508334
1988	65.34435742385108
1989	68.86814801682269
1990	75.615689458723
1991	80.04195961106956
1992	82.38259973655211
1993	81.86493072142247
1994	82.24073147548373
1995	86.00463120582454
1996	83.92081548955721
1997	88.54374176224744
1998	90.78190581098569
1999	92.10181970963842
2000	93.51537889510831
2001	94.69473850271946
2002	93.47169762285591
2003	93.90463113589664
2004	92.97183792259096
2005	92.61367480368352
2006	94.36560614963469
2007	94.03968184250961
2008	94.9070577340751
2009	94.53779904251479
2010	93.41302749680722
2011	94.5066731054034
2012	95.20123422309051
2013	91.78968367964401
2014	92.72320064297958
2015	93.06435204780233
2016	92.48653349375154
2017	86.17733344369096
2018	91.12816950304081
2019	86.05990072395885
2020	82.82244898936685
2021	81.65459453215225
2022	81.0649897755494