Year	% of children ages 12-23 months
1987	57
1988	85
1989	95
1990	85
1991	79
1992	91
1993	78
1994	81
1995	83
1996	79
1997	75
1998	80
1999	76
2000	85
2001	75
2002	84
2003	92
2004	78
2005	94
2006	67
2007	79
2008	85
2009	91
2010	85
2011	84
2012	81
2013	81
2014	77
2015	72
2016	69
2017	73
2018	75
2019	78
2020	83
2021	72
2022	69