Year	% of children ages 12-23 months
1981	9
1982	44
1983	67
1984	43
1985	81
1986	37
1987	88
1988	81
1989	84
1990	86
1991	90
1992	87
1993	87
1994	86
1995	94
1996	95
1997	97
1998	96
1999	97
2000	95
2001	93
2002	90
2003	99
2004	99
2005	99
2006	99
2007	99
2008	99
2009	99
2010	99
2011	99
2012	95
2013	99
2014	99
2015	99
2016	98
2017	99
2018	99
2019	99
2020	99
2021	99
2022	99