Year	% of children ages 12-23 months
1980	90
1981	90
1982	93
1983	96
1984	96
1985	96
1986	96
1987	96
1988	96
1989	96
1990	88
1991	80
1992	87
1993	76
1994	90
1995	91
1996	92
1997	95
1998	89
1999	85
2000	95
2001	95
2002	96
2003	93
2004	96
2005	97
2006	95
2007	97
2008	98
2009	97
2010	99
2011	99
2012	98
2013	99
2014	98
2015	97
2016	96
2017	96
2018	94
2019	95
2020	91
2021	87
2022	86