Year % of population ages 15-49 1990 5.8 1991 6.4 1992 7 1993 7.4 1994 7.6 1995 7.8 1996 7.8 1997 7.8 1998 7.6 1999 7.5 2000 7.3 2001 7 2002 6.8 2003 6.6 2004 6.3 2005 6.1 2006 5.9 2007 5.8 2008 5.7 2009 5.6 2010 5.5 2011 5.5 2012 5.4 2013 5.4 2014 5.4 2015 5.3 2016 5.3 2017 5.2 2018 5.1 2019 4.9 2020 4.7 2021 4.5 2022 4.3