Year	% of children ages 12-23 months
1980	6.4106642246444245
1981	10.312716240891369
1982	12.785703326364407
1983	14.592996393830798
1984	16.401828830739916
1985	21.157110943609315
1986	28.36581261871667
1987	31.400508074656695
1988	38.631346522487064
1989	50.289442290202764
1990	56.74348628724824
1991	52.63078102427422
1992	52.781966840316485
1993	55.39107825108415
1994	59.802647478356576
1995	59.53360933265422
1996	59.330931967186
1997	58.80633500801224
1998	57.666209886410606
1999	58.40419139445965
2000	61.01041319716043
2001	61.17376353437927
2002	62.365101486412875
2003	65.24295812824931
2004	67.98148089417519
2005	70.73308301914082
2006	71.37253233366918
2007	73.55535581728284
2008	73.69884260312169
2009	76.45309422674252
2010	77.28977027748027
2011	77.53742587861899
2012	76.79522488377174
2013	76.0794333324726
2014	76.12815773421345
2015	76.12251985175035
2016	75.8094809238422
2017	76.93559705373464
2018	76.98245575093539
2019	76.97432609834257
2020	75.54722265415568
2021	72.33987388295421
2022	73.53686378011716