Year	% of women ages 15-49
1990	28.7
1991	27.6
1992	26.7
1993	25.8
1994	25.1
1995	24.5
1996	24
1997	23.6
1998	23.3
1999	23.1
2000	23
2001	22.9
2002	22.9
2003	23
2004	23.1
2005	23.2
2006	23.2
2007	23.1
2008	23.1
2009	23
2010	23.1
2011	23.2
2012	23.5
2013	23.8
2014	24.3
2015	25
2016	25.7