Year	% of children ages 12-23 months
1980	4
1981	3
1982	5
1983	5
1984	16
1985	15
1986	11
1987	25
1988	35
1989	33
1990	25
1991	23
1992	21
1993	18
1994	12
1995	20
1996	31
1997	28
1998	27
1999	27
2000	24
2001	33
2002	36
2003	41
2004	50
2005	58
2006	58
2007	63
2008	64
2009	63
2010	66
2011	68
2012	67
2013	64
2014	62
2015	64
2016	66
2017	66
2018	72
2019	72
2020	70
2021	66
2022	69