Year % of population ages 15-49 1990 0.9 1991 1.1 1992 1.5 1993 1.9 1994 2.3 1995 2.7 1996 3.1 1997 3.4 1998 3.7 1999 3.8 2000 3.9 2001 3.9 2002 3.8 2003 3.7 2004 3.5 2005 3.4 2006 3.3 2007 3.1 2008 3 2009 2.9 2010 2.8 2011 2.7 2012 2.6 2013 2.5 2014 2.4 2015 2.3 2016 2.2 2017 2.1 2018 2.1 2019 2 2020 1.9 2021 1.8 2022 1.7