Year	% of children ages 12-23 months
1980	43
1981	42
1982	45
1983	44
1984	48
1985	21
1986	37
1987	16
1988	47
1989	50
1990	66
1991	63
1992	66
1993	75
1994	71
1995	77
1996	66
1997	73
1998	78
1999	77
2000	81
2001	77
2002	82
2003	84
2004	87
2005	87
2006	89
2007	85
2008	95
2009	92
2010	94
2011	88
2012	96
2013	96
2014	74
2015	70
2016	83
2017	91
2018	85
2019	85
2020	83
2021	79
2022	79