Year % of population ages 15-49 1990 2.2 1991 3.6 1992 5.5 1993 8 1994 10.9 1995 13.8 1996 16.3 1997 18.4 1998 19.9 1999 21 2000 21.8 2001 22.3 2002 22.7 2003 22.9 2004 23 2005 23.1 2006 23.3 2007 23.5 2008 23.9 2009 24.2 2010 24.4 2011 24.5 2012 24.6 2013 24.6 2014 24.4 2015 24.1 2016 23.7 2017 23.1 2018 22.4 2019 21.7 2020 21 2021 20.2 2022 19.3