Year	% of children ages 12-23 months
1982	43
1983	36
1984	60
1985	68
1986	91
1987	81
1988	83
1989	91
1990	82
1991	97
1992	75
1993	94
1994	92
1995	94
1996	95
1997	95
1998	90
1999	95
2000	88
2001	89
2002	98
2003	90
2004	95
2005	94
2006	94
2007	94
2008	99
2009	99
2010	95
2011	91
2012	99
2013	99
2014	99
2015	97
2016	99
2017	87
2018	86
2019	96
2020	89
2021	77
2022	81