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