Year	% of women ages 15-49
1990	42.6
1991	41
1992	39.5
1993	38
1994	36.6
1995	35.3
1996	34.1
1997	32.9
1998	31.9
1999	30.9
2000	30.1
2001	29.6
2002	29.2
2003	28.9
2004	28.6
2005	28.4
2006	28
2007	27.6
2008	27.3
2009	26.9
2010	26.8
2011	26.8
2012	26.9
2013	27.2
2014	27.6
2015	28.2
2016	29