Year	% of children ages 12-23 months
1984	27
1985	29
1986	54
1987	53
1988	39
1989	39
1990	34
1991	39
1992	33
1993	36
1994	50
1995	62
1996	56
1997	50
1998	54
1999	63
2000	65
2001	59
2002	52
2003	65
2004	80
2005	79
2006	78
2007	79
2008	89
2009	92
2010	90
2011	88
2012	84
2013	79
2014	83
2015	85
2016	85
2017	86
2018	87
2019	87
2020	83
2021	83
2022	83