Year	% of children ages 12-23 months
1985	95
1986	89
1987	92
1988	96
1989	96
1990	96
1991	98
1992	98
1993	91
1994	98
1995	98
1996	98
1997	97
1998	97
1999	97
2000	99
2001	99
2002	98
2003	97
2004	97
2005	97
2006	97
2007	96
2008	96
2009	95
2010	94
2011	89
2012	91
2013	92
2014	94
2015	89
2016	89
2017	82
2018	86
2019	88
2020	87
2021	86
2022	85