Year	% of children ages 12-23 months
1981	29
1982	64
1983	98
1984	77
1985	90
1986	95
1987	95
1988	89
1989	89
1990	86
1991	89
1992	92
1993	92
1994	92
1995	97
1996	98
1997	99
1998	93
1999	99
2000	97
2001	95
2002	98
2003	99
2004	99
2005	99
2006	99
2007	99
2008	99
2009	97
2010	99
2011	99
2012	98
2013	97
2014	99
2015	98
2016	97
2017	99
2018	96
2019	99
2020	97
2021	94
2022	98