Year	% of children ages 12-23 months
1984	17
1985	23
1986	37
1987	37
1988	45
1989	47
1990	38
1991	38
1992	32
1993	35
1994	37
1995	39
1996	43
1997	46
1998	47
1999	53
2000	59
2001	60
2002	54
2003	69
2004	85
2005	82
2006	80
2007	82
2008	91
2009	94
2010	90
2011	91
2012	90
2013	86
2014	90
2015	91
2016	91
2017	90
2018	89
2019	88
2020	87
2021	87
2022	85