Year	% of children ages 12-23 months
1983	48
1984	73
1985	69
1986	80
1987	89
1988	95
1989	95
1990	89
1991	87
1992	99
1993	99
1994	91
1995	93
1996	99
1997	93
1998	99
1999	99
2000	95
2001	97
2002	99
2003	99
2004	97
2005	99
2006	99
2007	99
2008	99
2009	99
2010	98
2011	99
2012	98
2013	96
2014	93
2015	91
2016	88
2017	99
2018	96
2019	93
2020	89
2021	85
2022	99