Year	% of children ages 12-23 months
1982	43
1983	42
1984	55
1985	65
1986	67
1987	81
1988	87
1989	93
1990	93
1991	94
1992	94
1993	92
1994	91
1995	91
1996	92
1997	92
1998	94
1999	90
2000	95
2001	92
2002	94
2003	90
2004	95
2005	96
2006	98
2007	98
2008	98
2009	98
2010	97
2011	96
2012	96
2013	94
2014	98
2015	98
2016	96
2017	98
2018	96
2019	98
2020	98
2021	95
2022	95