Year	% of children ages 12-23 months
1980	63
1981	76
1982	80
1983	62
1984	70
1985	78
1986	73
1987	85
1988	82
1989	87
1990	92
1991	85
1992	85
1993	90
1994	93
1995	96
1996	96
1997	96
1998	85
1999	74
2000	80
2001	87
2002	87
2003	87
2004	87
2005	95
2006	95
2007	95
2008	96
2009	98
2010	97
2011	96
2012	98
2013	97
2014	96
2015	97
2016	95
2017	92
2018	93
2019	88
2020	85
2021	82
2022	79