Year	% of children ages 12-23 months
1980	8.528374993287915
1981	10.666374015964482
1982	11.632977056113802
1983	31.37162335157099
1984	35.29873660224262
1985	40.97801534792285
1986	41.39557672352453
1987	49.758429353349676
1988	59.750608893703166
1989	65.48063668700927
1990	71.5622967707442
1991	67.34648781348518
1992	68.10712285335494
1993	68.53303596286474
1994	69.96006622707012
1995	71.96501105204322
1996	71.70327250105677
1997	69.4746881255055
1998	68.99463257631298
1999	69.60422797149492
2000	70.07714143419608
2001	70.70683992286465
2002	70.09603357114042
2003	71.7513851451841
2004	73.79417005693148
2005	75.36244377774992
2006	77.2411520465347
2007	77.87548719608347
2008	79.59571929164538
2009	82.3186273876728
2010	83.13692598908972
2011	83.54801271361433
2012	83.13049712012996
2013	83.22287245305652
2014	83.57342716357347
2015	83.95767192630817
2016	84.28432076575918
2017	84.60940123073395
2018	85.7047432262738
2019	85.55554109341293
2020	82.85447236828466
2021	80.88152550959629
2022	82.78121869584359