Year	% of children ages 12-23 months
1980	60
1981	75
1982	81
1983	80
1984	82
1985	83
1986	84
1987	85
1988	86
1989	87
1990	90
1991	92
1992	87
1993	85
1994	80
1995	74
1996	99
1997	70
1998	75
1999	80
2000	85
2001	95
2002	96
2003	97
2004	99
2005	98
2006	98
2007	98
2008	98
2009	97
2010	97
2011	97
2012	97
2013	96
2014	96
2015	96
2016	99
2017	99
2018	98
2019	98
2020	96
2021	99
2022	99