Year	% of children ages 12-23 months
1980	69
1981	70
1982	71
1983	70
1984	79
1985	75
1986	62
1987	88
1988	80
1989	85
1990	86
1991	87
1992	83
1993	87
1994	89
1995	91
1996	94
1997	91
1998	90
1999	90
2000	89
2001	89
2002	90
2003	90
2004	92
2005	91
2006	89
2007	88
2008	92
2009	96
2010	92
2011	91
2012	95
2013	96
2014	96
2015	97
2016	97
2017	90
2018	91
2019	85
2020	82
2021	79
2022	74