Year	% of children ages 12-23 months
1980	19
1981	16
1982	26
1983	37
1984	62
1985	48
1986	46
1987	56
1988	63
1989	58
1990	69
1991	74
1992	87
1993	96
1994	76
1995	75
1996	81
1997	61
1998	71
1999	82
2000	92
2001	90
2002	86
2003	91
2004	91
2005	91
2006	91
2007	91
2008	91
2009	91
2010	93
2011	91
2012	88
2013	88
2014	84
2015	78
2016	85
2017	92
2018	93
2019	87
2020	80
2021	68
2022	54