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