Year % ages 15-24 1990 0.1 1991 0.1 1992 0.1 1993 0.1 1994 0.2 1995 0.2 1996 0.3 1997 0.3 1998 0.4 1999 0.4 2000 0.5 2001 0.6 2002 0.6 2003 0.7 2004 0.7 2005 0.7 2006 0.7 2007 0.7 2008 0.7 2009 0.7 2010 0.6 2011 0.6 2012 0.6 2013 0.6 2014 0.5 2015 0.5 2016 0.5 2017 0.5 2018 0.4 2019 0.4 2020 0.4 2021 0.4 2022 0.4