Year	% of children ages 12-23 months
1983	23
1984	31
1985	39
1986	54
1987	92
1988	88
1989	99
1990	88
1991	87
1992	88
1993	89
1994	89
1995	88
1996	88
1997	87
1998	88
1999	89
2000	90
2001	90
2002	91
2003	92
2004	93
2005	95
2006	96
2007	98
2008	99
2009	99
2010	99
2011	90
2012	94
2013	93
2014	95
2015	93
2016	96
2017	96
2018	98
2019	96
2020	93
2021	93
2022	93