Year	% of children ages 12-23 months
1991	99
1992	99
1993	96
1994	97
1995	97
1996	98
1997	98
1998	99
1999	99
2000	99
2001	97
2002	96
2003	94
2004	94
2005	94
2006	90
2007	90
2008	86
2009	88
2010	88
2011	90
2012	84
2013	82
2014	81
2015	84
2016	82
2017	86
2018	89
2019	86
2020	90
2021	89
2022	91