Year % of population ages 15-49 1990 0.1 1991 0.2 1992 0.4 1993 0.6 1994 0.8 1995 1.1 1996 1.3 1997 1.6 1998 1.9 1999 2.1 2000 2.2 2001 2.3 2002 2.3 2003 2.3 2004 2.2 2005 2.1 2006 2 2007 1.9 2008 1.8 2009 1.7 2010 1.6 2011 1.5 2012 1.4 2013 1.3 2014 1.3 2015 1.3 2016 1.2 2017 1.2 2018 1.2