Year	% of children ages 12-23 months
1980	73
1981	80
1982	88
1983	94
1984	90
1985	98
1986	99
1987	99
1988	99
1989	99
1990	99
1991	96
1992	92
1993	99
1994	99
1995	99
1996	99
1997	98
1998	99
1999	94
2000	99
2001	99
2002	99
2003	98
2004	99
2005	98
2006	97
2007	97
2008	99
2009	99
2010	94
2011	91
2012	95
2013	96
2014	97
2015	96
2016	98
2017	97
2018	99
2019	97
2020	99
2021	99
2022	97