Year % ages 15-24 1990 4.4 1991 4.4 1992 4.3 1993 4.1 1994 3.9 1995 3.7 1996 3.4 1997 3.2 1998 3.1 1999 3 2000 2.9 2001 2.7 2002 2.6 2003 2.6 2004 2.6 2005 2.6 2006 2.5 2007 2.5 2008 2.5 2009 2.5 2010 2.5 2011 2.5 2012 2.5 2013 2.6 2014 2.7 2015 2.8 2016 2.9 2017 3 2018 3.1 2019 3.2 2020 3.3 2021 3.4 2022 3.6