Year	% of population ages 15-49
1990	0.7
1991	0.9
1992	1
1993	1.2
1994	1.3
1995	1.4
1996	1.5
1997	1.6
1998	1.7
1999	1.7
2000	1.8
2001	1.8
2002	1.7
2003	1.7
2004	1.7
2005	1.7
2006	1.6
2007	1.6
2008	1.6
2009	1.6
2010	1.6
2011	1.6
2012	1.6
2013	1.6
2014	1.6
2015	1.6
2016	1.5
2017	1.5
2018	1.5