Year	% of children ages 12-23 months
1980	9.071579789309059
1981	10.199340430467542
1982	14.117798421208512
1983	17.03125269463778
1984	21.35467303587777
1985	26.61221017707654
1986	30.04986230431297
1987	37.52256786973594
1988	45.4043407417613
1989	55.2024149980995
1990	68.84034639379509
1991	60.58282175191408
1992	59.78955941290801
1993	60.94317860309307
1994	66.30588222732116
1995	68.6894970170793
1996	65.59361546226197
1997	64.03557323022974
1998	64.7174947544382
1999	63.63347352452789
2000	63.94052496497549
2001	64.65796327011975
2002	64.24356018685103
2003	66.92293599063454
2004	69.449310775624
2005	69.85515396757708
2006	70.22247986244932
2007	69.5545641249774
2008	73.50127527047401
2009	76.51789833830556
2010	77.65983392247301
2011	79.40161096473247
2012	78.90857584880142
2013	78.19714584347014
2014	80.40783416610458
2015	81.04260010613883
2016	83.30651530845171
2017	83.26258306199206
2018	84.25341497253292
2019	85.38953625302392
2020	81.40067550966297
2021	80.10151351683317
2022	84.66017346326345