Year	% of children ages 12-23 months
1980	45
1981	44
1982	43
1983	46
1984	41
1985	71
1986	51
1987	48
1988	63
1989	73
1990	98
1991	54
1992	55
1993	86
1994	80
1995	93
1996	94
1997	98
1998	99
1999	94
2000	97
2001	95
2002	93
2003	90
2004	93
2005	99
2006	98
2007	99
2008	95
2009	91
2010	92
2011	89
2012	93
2013	94
2014	96
2015	97
2016	98
2017	89
2018	87
2019	85
2020	74
2021	85
2022	65