Year	% of children ages 12-23 months
1980	86
1981	97
1982	97
1983	98
1984	98
1985	97
1986	97
1987	82
1988	98
1989	94
1990	90
1991	87
1992	83
1993	84
1994	89
1995	88
1996	91
1997	91
1998	92
1999	92
2000	91
2001	91
2002	91
2003	93
2004	93
2005	92
2006	92
2007	92
2008	92
2009	90
2010	92
2011	92
2012	91
2013	92
2014	92
2015	92
2016	92
2017	91
2018	92
2019	90
2020	91
2021	92
2022	92