Year	% of children ages 12-23 months
1982	34
1983	53
1984	55
1985	67
1986	71
1987	69
1988	73
1989	80
1990	76
1991	88
1992	84
1993	84
1994	85
1995	89
1996	61
1997	87
1998	85
1999	80
2000	84
2001	90
2002	84
2003	91
2004	98
2005	98
2006	99
2007	98
2008	98
2009	99
2010	99
2011	99
2012	99
2013	99
2014	98
2015	99
2016	92
2017	89
2018	99
2019	99
2020	89
2021	87
2022	98