Year	% of children ages 12-23 months
1980	5.817214304663028
1981	9.795478593437137
1982	11.963148580084813
1983	14.79000366192134
1984	16.142395070063507
1985	20.656116651774568
1986	26.84151881578707
1987	30.248048959313532
1988	37.087205884882884
1989	48.04820791113012
1990	54.37739951563536
1991	50.18651940476811
1992	49.67113609821878
1993	52.510142141202344
1994	57.37696854125904
1995	57.03669408618789
1996	56.8956052486765
1997	56.60084530001309
1998	54.608793151609675
1999	55.15582524683016
2000	57.15126501603475
2001	58.378913661480404
2002	59.58414984911873
2003	62.3181658095279
2004	65.11609751150857
2005	67.1604973074725
2006	68.12632019247529
2007	71.53135806147093
2008	71.73693319590252
2009	74.25237176096314
2010	75.70072035440528
2011	76.30268297207338
2012	75.63415683767722
2013	74.78256057024021
2014	74.90697945594053
2015	74.54277503557046
2016	73.67314555746738
2017	74.61683861690352
2018	75.03719168617845
2019	75.12191289992143
2020	73.8256161102974
2021	69.99224534423024
2022	71.5519419955511