Year	% of children ages 12-23 months
1980	10.680939094231311
1981	12.710672419564489
1982	15.190950900876466
1983	30.807090256980608
1984	37.57265665655848
1985	42.47415400034385
1986	45.83038203586158
1987	50.71680961871162
1988	60.892271538819514
1989	66.32707630301495
1990	74.62737869175268
1991	70.03023061871227
1992	68.48022658030693
1993	68.22660306761917
1994	70.46717486848718
1995	71.03065588061739
1996	69.85659328778613
1997	69.17537617350226
1998	69.52777755951914
1999	69.11014804518544
2000	69.8847969444106
2001	70.43099758462444
2002	70.09721377479453
2003	71.84651253280322
2004	74.03594994578154
2005	74.94716463789757
2006	76.35375602719
2007	76.46832631540754
2008	79.45194970392402
2009	81.60618194572805
2010	82.17019670415462
2011	83.31418976186622
2012	83.07259396870775
2013	82.68382406007922
2014	83.52258209918888
2015	83.71349522154713
2016	84.93135341586418
2017	85.0282067565597
2018	85.80167562251694
2019	85.89367169941393
2020	82.54090639084833
2021	80.40850850260651
2022	83.53891419015446