Year	% of children ages 12-23 months
1983	90
1984	90
1985	85
1986	83
1987	80
1988	83
1989	83
1990	86
1991	96
1992	98
1993	94
1994	93
1995	97
1996	97
1997	95
1998	93
1999	92
2000	90
2001	91
2002	93
2003	92
2004	92
2005	91
2006	94
2007	93
2008	94
2009	94
2010	93
2011	94
2012	95
2013	94
2014	93
2015	95
2016	96
2017	96
2018	96
2019	97
2020	97
2021	97
2022	97