Year	% of children ages 12-23 months
1980	71
1981	76
1982	64
1983	85
1984	72
1985	84
1986	74
1987	78
1988	73
1989	73
1990	73
1991	80
1992	76
1993	83
1994	84
1995	84
1996	90
1997	92
1998	96
1999	90
2000	97
2001	95
2002	95
2003	95
2004	97
2005	99
2006	95
2007	95
2008	96
2009	96
2010	97
2011	97
2012	98
2013	92
2014	90
2015	93
2016	95
2017	98
2018	98
2019	97
2020	80
2021	92
2022	92