Year	% of children ages 12-23 months
1984	95
1985	79
1986	88
1987	77
1988	93
1989	93
1990	86
1991	86
1992	84
1993	87
1994	88
1995	90
1996	90
1997	94
1998	95
1999	95
2000	95
2001	96
2002	98
2003	98
2004	97
2005	96
2006	98
2007	96
2008	97
2009	96
2010	97
2011	97
2012	96
2013	96
2014	97
2015	97
2016	97
2017	95
2018	96
2019	95
2020	94
2021	92
2022	93