Year % of population ages 15-49 1990 0.5 1991 0.5 1992 0.6 1993 0.7 1994 0.8 1995 0.9 1996 1 1997 1.1 1998 1.2 1999 1.3 2000 1.3 2001 1.4 2002 1.5 2003 1.6 2004 1.6 2005 1.7 2006 1.8 2007 1.8 2008 1.8 2009 1.9 2010 1.9 2011 1.9 2012 1.9 2013 1.9 2014 1.9 2015 1.8 2016 1.8 2017 1.7 2018 1.7 2019 1.6 2020 1.6 2021 1.5 2022 1.5