Year	% of children ages 12-23 months
1982	12
1983	15
1984	60
1985	64
1986	36
1987	62
1988	68
1989	71
1990	74
1991	77
1992	63
1993	80
1994	82
1995	90
1996	96
1997	88
1998	88
1999	82
2000	88
2001	85
2002	86
2003	78
2004	86
2005	84
2006	87
2007	76
2008	88
2009	88
2010	89
2011	88
2012	93
2013	94
2014	92
2015	91
2016	95
2017	95
2018	89
2019	94
2020	93
2021	88
2022	91