Year	% of children ages 12-23 months
1985	17
1986	17
1987	25
1988	30
1989	48
1990	74
1991	69
1992	73
1993	75
1994	81
1995	67
1996	66
1997	66
1998	70
1999	74
2000	78
2001	76
2002	75
2003	73
2004	72
2005	70
2006	74
2007	82
2008	75
2009	79
2010	76
2011	75
2012	80
2013	77
2014	74
2015	74
2016	76
2017	76
2018	76
2019	76
2020	72
2021	76
2022	76