Year	% of children ages 12-23 months
1984	55
1985	63
1986	65
1987	69
1988	72
1989	75
1990	78
1991	81
1992	84
1993	84
1994	84
1995	83
1996	81
1997	79
1998	90
1999	76
2000	78
2001	77
2002	78
2003	72
2004	73
2005	69
2006	77
2007	80
2008	90
2009	88
2010	86
2011	87
2012	93
2013	94
2014	95
2015	96
2016	96
2017	89
2018	89
2019	89
2020	88
2021	89
2022	90