Year	% of children ages 12-23 months
1990	43
1991	50
1992	50
1993	50
1994	50
1995	50
1996	55
1997	57
1998	55
1999	70
2000	74
2001	77
2002	81
2003	84
2004	86
2005	87
2006	88
2007	90
2008	90
2009	90
2010	91
2011	90
2012	90
2013	90
2014	87
2015	85
2016	87
2017	92
2018	93
2019	94
2020	92
2021	94
2022	94