Year	% of children ages 12-23 months
1984	50
1985	37
1986	86
1987	87
1988	87
1989	47
1990	63
1991	86
1992	82
1993	83
1994	88
1995	92
1996	92
1997	92
1998	92
1999	93
2000	94
2001	95
2002	95
2003	94
2004	89
2005	92
2006	85
2007	74
2008	72
2009	73
2010	76
2011	96
2012	99
2013	99
2014	99
2015	97
2016	97
2017	98
2018	97
2019	98
2020	98
2021	99
2022	98