Year	% of children ages 12-23 months
1980	76
1981	78
1982	79
1983	79
1984	77
1985	80
1986	81
1987	80
1988	82
1989	84
1990	84
1991	81
1992	64
1993	79
1994	78
1995	88
1996	90
1997	92
1998	94
1999	94
2000	94
2001	95
2002	98
2003	98
2004	99
2005	99
2006	99
2007	95
2008	96
2009	95
2010	96
2011	99
2012	99
2013	98
2014	99
2015	99
2016	99
2017	99
2018	99
2019	98
2020	96
2021	95
2022	95