Year	% of children ages 12-23 months
1980	46
1981	35
1982	23
1983	27
1984	45
1985	38
1986	42
1987	66
1988	69
1989	67
1990	77
1991	76
1992	71
1993	65
1994	68
1995	69
1996	72
1997	72
1998	70
1999	88
2000	86
2001	84
2002	78
2003	84
2004	90
2005	89
2006	99
2007	88
2008	85
2009	86
2010	83
2011	91
2012	92
2013	83
2014	77
2015	87
2016	94
2017	83
2018	85
2019	94
2020	94
2021	87
2022	89