Year	% of children ages 12-23 months
1980	95
1981	95
1982	95
1983	95
1984	95
1985	95
1986	95
1987	95
1988	80
1989	94
1990	93
1991	92
1992	95
1993	97
1994	96
1995	94
1996	95
1997	87
1998	79
1999	87
2000	95
2001	95
2002	95
2003	95
2004	95
2005	97
2006	98
2007	98
2008	99
2009	98
2010	98
2011	98
2012	99
2013	99
2014	99
2015	99
2016	98
2017	98
2018	98
2019	97
2020	97
2021	98
2022	98