Year	% of children ages 12-23 months
1980	14.744249511164263
1981	15.923093730528032
1982	22.64685234903341
1983	26.07573177363536
1984	31.649972039440964
1985	52.734914549671885
1986	58.18849264476344
1987	61.95595012052626
1988	70.53616431733101
1989	76.38828084710725
1990	76.99882998565798
1991	76.55556919223699
1992	75.31020362903253
1993	75.96051864967994
1994	75.50183743024583
1995	77.13722260088947
1996	79.65227753907578
1997	79.2729064211167
1998	81.75114843150266
1999	81.94078362812394
2000	81.88447513472528
2001	81.42912819135371
2002	81.48898216067504
2003	81.70311118023828
2004	82.32138645399843
2005	82.49180527448391
2006	81.98447374965961
2007	83.44402689229528
2008	83.06564230143132
2009	85.47168041899599
2010	86.88442701525423
2011	86.91196819983206
2012	84.04871639787397
2013	85.16796313488754
2014	83.91296497667142
2015	84.00383158141638
2016	86.24654462253528
2017	85.68610845865425
2018	84.6070544552689
2019	84.73178876113666
2020	82.64573503970946
2021	82.2111642808579
2022	83.01954621252224