Year	% of children ages 12-23 months
1980	49
1981	64
1982	64
1983	58
1984	50
1985	49
1986	60
1987	79
1988	82
1989	84
1990	81
1991	85
1992	91
1993	87
1994	83
1995	90
1996	90
1997	87
1998	90
1999	82
2000	73
2001	81
2002	69
2003	77
2004	80
2005	82
2006	85
2007	83
2008	88
2009	92
2010	93
2011	96
2012	90
2013	88
2014	85
2015	87
2016	81
2017	83
2018	87
2019	92
2020	90
2021	90
2022	82