Year	% of children ages 12-23 months
1984	58
1985	70
1986	72
1987	77
1988	82
1989	83
1990	84
1991	86
1992	87
1993	89
1994	92
1995	94
1996	87
1997	79
1998	81
1999	82
2000	82
2001	80
2002	84
2003	73
2004	73
2005	76
2006	80
2007	81
2008	88
2009	88
2010	90
2011	96
2012	94
2013	87
2014	92
2015	89
2016	89
2017	82
2018	92
2019	91
2020	89
2021	91
2022	90