Year	% of children ages 12-23 months
1983	1
1984	3
1985	3
1986	10
1987	14
1988	14
1989	20
1990	20
1991	18
1992	10
1993	13
1994	18
1995	18
1996	20
1997	24
1998	36
1999	45
2000	37
2001	26
2002	24
2003	22
2004	21
2005	25
2006	40
2007	28
2008	19
2009	25
2010	39
2011	33
2012	40
2013	39
2014	36
2015	42
2016	41
2017	41
2018	46
2019	50
2020	52
2021	58
2022	60