Year	% of children ages 12-23 months
1980	61
1981	77
1982	67
1983	67
1984	79
1985	54
1986	87
1987	80
1988	87
1989	89
1990	93
1991	99
1992	92
1993	95
1994	96
1995	99
1996	99
1997	93
1998	95
1999	97
2000	91
2001	89
2002	95
2003	97
2004	99
2005	98
2006	97
2007	94
2008	96
2009	96
2010	95
2011	95
2012	94
2013	94
2014	95
2015	89
2016	90
2017	89
2018	94
2019	86
2020	77
2021	86
2022	83