Year	% of children ages 12-23 months
1984	75
1985	77
1986	39
1987	81
1988	82
1989	76
1990	76
1991	72
1992	72
1993	72
1994	70
1995	70
1996	90
1997	90
1998	89
1999	88
2000	89
2001	91
2002	92
2003	94
2004	95
2005	96
2006	98
2007	99
2008	99
2009	99
2010	99
2011	99
2012	99
2013	99
2014	97
2015	97
2016	97
2017	97
2018	97
2019	97
2020	97
2021	97
2022	97