Year	% of children ages 12-23 months
1987	69
1988	84
1989	94
1990	81
1991	76
1992	78
1993	80
1994	83
1995	90
1996	82
1997	74
1998	82
1999	79
2000	85
2001	84
2002	88
2003	91
2004	85
2005	96
2006	83
2007	92
2008	86
2009	86
2010	80
2011	92
2012	91
2013	91
2014	83
2015	74
2016	70
2017	76
2018	73
2019	78
2020	79
2021	64
2022	69