Year	% of children ages 12-23 months
1983	74
1984	75
1985	75
1986	70
1987	72
1988	70
1989	71
1990	72
1991	81
1992	79
1993	81
1994	73
1995	72
1996	73
1997	76
1998	75
1999	74
2000	73
2001	71
2002	70
2003	69
2004	74
2005	81
2006	84
2007	85
2008	82
2009	81
2010	77
2011	75
2012	71
2013	81
2014	85
2015	85
2016	85
2017	84
2018	82
2019	85
2020	84
2021	86
2022	85