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