Year	% of children ages 12-23 months
1980	57
1981	57
1982	57
1983	57
1984	69
1985	84
1986	80
1987	81
1988	87
1989	90
1990	87
1991	76
1992	79
1993	81
1994	83
1995	88
1996	90
1997	88
1998	92
1999	97
2000	98
2001	99
2002	97
2003	98
2004	97
2005	98
2006	98
2007	98
2008	97
2009	97
2010	97
2011	96
2012	93
2013	97
2014	94
2015	93
2016	95
2017	94
2018	95
2019	95
2020	94
2021	96
2022	97