Year	% of children ages 12-23 months
1983	26
1984	35
1985	44
1986	44
1987	55
1988	56
1989	48
1990	38
1991	39
1992	39
1993	47
1994	44
1995	46
1996	62
1997	78
1998	59
1999	40
2000	32
2001	60
2002	59
2003	44
2004	43
2005	21
2006	21
2007	58
2008	48
2009	46
2010	62
2011	57
2012	65
2013	59
2014	56
2015	51
2016	45
2017	42
2018	50
2019	51
2020	44
2021	36
2022	37