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