Year % ages 15-24 1990 0.2 1991 0.4 1992 0.5 1993 0.6 1994 0.6 1995 0.6 1996 0.6 1997 0.6 1998 0.6 1999 0.6 2000 0.7 2001 0.7 2002 0.7 2003 0.7 2004 0.7 2005 0.6 2006 0.6 2007 0.6 2008 0.5 2009 0.5 2010 0.5 2011 0.5 2012 0.5 2013 0.4 2014 0.4 2015 0.4 2016 0.4 2017 0.4 2018 0.4 2019 0.4 2020 0.3 2021 0.3 2022 0.3