Year	% of population ages 15-49
1990	4.3
1991	4.5
1992	4.7
1993	4.7
1994	4.7
1995	4.7
1996	4.6
1997	4.5
1998	4.4
1999	4.3
2000	4.2
2001	4
2002	3.9
2003	3.8
2004	3.7
2005	3.7
2006	3.6
2007	3.5
2008	3.5
2009	3.5
2010	3.5
2011	3.5
2012	3.5
2013	3.6
2014	3.6
2015	3.6
2016	3.7
2017	3.7
2018	3.8
2019	3.9
2020	4
2021	4
2022	4.1