Year	% of children ages 12-23 months
1980	16
1981	23
1982	21
1983	16
1984	10
1985	21
1986	31
1987	51
1988	59
1989	65
1990	61
1991	63
1992	64
1993	66
1994	68
1995	70
1996	71
1997	73
1998	78
1999	81
2000	90
2001	78
2002	78
2003	80
2004	83
2005	83
2006	85
2007	95
2008	86
2009	93
2010	93
2011	91
2012	88
2013	89
2014	92
2015	89
2016	89
2017	95
2018	92
2019	92
2020	88
2021	94
2022	95