Year	% of children ages 12-23 months
1982	65
1983	66
1984	63
1985	79
1986	85
1987	87
1988	78
1989	87
1990	86
1991	93
1992	94
1993	88
1994	88
1995	90
1996	92
1997	93
1998	92
1999	86
2000	93
2001	94
2002	94
2003	90
2004	89
2005	85
2006	88
2007	96
2008	90
2009	98
2010	94
2011	90
2012	91
2013	92
2014	92
2015	94
2016	89
2017	90
2018	89
2019	83
2020	87
2021	82
2022	80