Year	% of children ages 12-23 months
1982	43
1983	63
1984	85
1985	93
1986	97
1987	87
1988	90
1989	88
1990	88
1991	98
1992	99
1993	99
1994	99
1995	99
1996	99
1997	99
1998	98
1999	99
2000	99
2001	99
2002	99
2003	99
2004	99
2005	98
2006	97
2007	96
2008	99
2009	99
2010	99
2011	99
2012	99
2013	93
2014	94
2015	96
2016	96
2017	77
2018	84
2019	92
2020	92
2021	88
2022	83