Year	% of children ages 12-23 months
1980	7.456374820317621
1981	9.6726294623286
1982	10.675313781909528
1983	30.50129377360346
1984	34.48614445329867
1985	40.218904824679825
1986	40.73467340272946
1987	49.15248847386948
1988	59.42875959216338
1989	65.38683113517412
1990	71.45822817880621
1991	67.18773812969376
1992	67.76519600709283
1993	68.14264810528287
1994	69.50892083513024
1995	71.66329025281107
1996	71.23046489178022
1997	68.82700728992003
1998	68.23498936772991
1999	68.9360019159318
2000	69.48468209857293
2001	70.12797586233391
2002	69.5969313929033
2003	71.27942828256509
2004	73.3622877777299
2005	74.97153665873181
2006	76.86266504463843
2007	77.489400219599
2008	79.19454809931878
2009	82.01685491341584
2010	82.89480322258036
2011	83.29584366526264
2012	82.86174529505517
2013	82.96451924263323
2014	83.29906437044241
2015	83.6867846858544
2016	84.04776256742285
2017	84.34729171326033
2018	85.57406483800676
2019	85.34630516645696
2020	82.75400861777013
2021	80.63453198579674
2022	82.45006849932045