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