Year	% of children ages 12-23 months
1980	12.404383565499298
1981	15.185502382356601
1982	15.456191891442938
1983	56.97460067879719
1984	61.8475957807208
1985	70.01734415612404
1986	60.21532975826736
1987	68.98790131137756
1988	81.97714148121226
1989	83.20569609089367
1990	87.24033061366708
1991	85.47595067382547
1992	83.71596946315759
1993	80.69232507580878
1994	77.81285965029554
1995	81.35146546151474
1996	84.40019543663568
1997	85.45902362451183
1998	85.64447733555032
1999	86.5103779651447
2000	86.69008444341881
2001	87.09674218340528
2002	86.0193159949376
2003	86.0621867874842
2004	86.66565879653946
2005	86.99534998104092
2006	91.05872043593827
2007	90.92273006370606
2008	92.67475285824543
2009	93.4014039326466
2010	93.33458614514078
2011	94.17415606744976
2012	94.4771517305106
2013	94.37112968155922
2014	94.03283618408635
2015	94.36682118544068
2016	94.40174068132872
2017	93.29771101411023
2018	94.67648347764391
2019	92.9487586716228
2020	90.13552142350642
2021	89.26091850935582
2022	90.47905875709144