Year	% of children ages 12-23 months
1981	42
1982	48
1983	53
1984	53
1985	52
1986	79
1987	78
1988	79
1989	83
1990	83
1991	89
1992	82
1993	74
1994	25
1995	84
1996	76
1997	66
1998	72
1999	78
2000	74
2001	69
2002	69
2003	90
2004	84
2005	89
2006	95
2007	94
2008	92
2009	95
2010	95
2011	95
2012	97
2013	95
2014	97
2015	96
2016	95
2017	97
2018	99
2019	96
2020	94
2021	87
2022	96