Year	% of children ages 12-23 months
1982	6
1983	14
1984	21
1985	22
1986	24
1987	25
1988	65
1989	77
1990	85
1991	53
1992	41
1993	41
1994	41
1995	41
1996	41
1997	32
1998	23
1999	23
2000	46
2001	53
2002	62
2003	68
2004	64
2005	71
2006	72
2007	88
2008	89
2009	89
2010	88
2011	87
2012	81
2013	82
2014	78
2015	84
2016	68
2017	76
2018	84
2019	85
2020	70
2021	59
2022	59