Year	% of children ages 12-23 months
1980	30
1981	81
1982	75
1983	76
1984	81
1985	85
1986	88
1987	90
1988	93
1989	94
1990	92
1991	92
1992	92
1993	91
1994	94
1995	95
1996	96
1997	99
1998	99
1999	85
2000	91
2001	99
2002	95
2003	97
2004	95
2005	95
2006	98
2007	98
2008	97
2009	98
2010	98
2011	98
2012	98
2013	98
2014	98
2015	99
2016	98
2017	99
2018	96
2019	89
2020	77
2021	77
2022	77