Year	% of children ages 12-23 months
1980	46.37212314243516
1981	53.02911401130937
1982	54.206027694109295
1983	61.31706920310545
1984	67.09719279512358
1985	71.04239848873368
1986	73.73199927061266
1987	73.24578690788049
1988	79.42179403532799
1989	81.69124079381469
1990	83.32152229924655
1991	82.59184738417304
1992	82.11238245359698
1993	83.55750046905888
1994	86.86570797787023
1995	88.21504313661309
1996	89.54472223779312
1997	89.50033090739576
1998	89.36771663336663
1999	90.60189309784967
2000	90.9102980098229
2001	91.5137898848604
2002	91.92622744602569
2003	92.76807484103219
2004	92.98708706775375
2005	92.59622347619768
2006	92.9592983725802
2007	92.88984727902478
2008	92.70545300492705
2009	91.13481259543245
2010	91.31147234217761
2011	91.91073621902157
2012	92.61192495612025
2013	92.82468174906113
2014	92.05402741634903
2015	91.75552450937683
2016	91.20224403428179
2017	92.9635303635959
2018	93.56155827171325
2019	92.91273612268675
2020	93.03071481009556
2021	93.31827232030501
2022	93.1455709798903