Year	% of children ages 12-23 months
1980	25
1981	27
1982	61
1983	85
1984	80
1985	84
1986	80
1987	71
1988	64
1989	72
1990	83
1991	75
1992	74
1993	76
1994	74
1995	84
1996	85
1997	81
1998	90
1999	85
2000	71
2001	68
2002	73
2003	75
2004	85
2005	83
2006	84
2007	84
2008	85
2009	87
2010	94
2011	80
2012	76
2013	76
2014	71
2015	73
2016	77
2017	67
2018	81
2019	77
2020	51
2021	72
2022	77