Year	% of children ages 12-23 months
1984	31
1985	51
1986	71
1987	71
1988	43
1989	82
1990	94
1991	52
1992	38
1993	70
1994	58
1995	75
1996	60
1997	48
1998	75
1999	73
2000	70
2001	70
2002	89
2003	80
2004	76
2005	68
2006	69
2007	75
2008	81
2009	83
2010	74
2011	83
2012	86
2013	87
2014	87
2015	91
2016	91
2017	91
2018	91
2019	91
2020	91
2021	91
2022	88