Year	% of children ages 12-23 months
1980	60
1981	58
1982	62
1983	69
1984	83
1985	83
1986	79
1987	79
1988	76
1989	78
1990	91
1991	82
1992	90
1993	86
1994	90
1995	93
1996	85
1997	96
1998	93
1999	87
2000	93
2001	84
2002	87
2003	89
2004	93
2005	92
2006	84
2007	93
2008	85
2009	93
2010	86
2011	91
2012	87
2013	91
2014	94
2015	97
2016	97
2017	90
2018	95
2019	90
2020	85
2021	82
2022	86