Year	% of children ages 12-23 months
1980	34.673577098174285
1981	39.806052922280756
1982	44.71593956907968
1983	47.69090865281465
1984	55.95330588639925
1985	54.4882968647017
1986	54.92325102759892
1987	57.72727663407448
1988	61.489927036309
1989	63.130555229841164
1990	67.26513800126756
1991	77.82707592104555
1992	77.27011852585542
1993	78.76666950042465
1994	80.48986109617003
1995	83.57998623631207
1996	82.60325966435293
1997	83.68531258155969
1998	87.99990589013991
1999	89.08702689431223
2000	91.32660348672823
2001	90.80718442080186
2002	92.59102815356653
2003	93.87148475339383
2004	93.62595428780044
2005	94.02464698500727
2006	94.84770999985179
2007	94.76419416555828
2008	94.66464483690652
2009	94.408105514259
2010	94.26741490928009
2011	93.82072755723367
2012	94.09430591080276
2013	90.56945007695951
2014	89.21309195473127
2015	90.00071725833409
2016	89.72875978804551
2017	85.63651401470908
2018	87.24837171116721
2019	79.82549641742828
2020	76.20355375359125
2021	75.36405950402758
2022	79.44134839962499