Year % of population ages 15-49 1990 1.3 1991 2.7 1992 5 1993 8 1994 11.4 1995 15 1996 18 1997 20.4 1998 22.2 1999 23.6 2000 24.6 2001 25.3 2002 25.7 2003 26.1 2004 26.3 2005 26.5 2006 26.7 2007 27 2008 27.2 2009 27.5 2010 27.9 2011 28.4 2012 28.9 2013 29.5 2014 29.9 2015 29.9 2016 29.6 2017 29.2 2018 28.9 2019 28.4 2020 27.6 2021 26.8 2022 25.9