Year % of relevant age group 1987 42.5785484313965 1988 43.0901489257812 1989 43.2661285400391 1990 43.3675994873047 1991 44.022029876709 1992 45.227840423584 1993 45.9794082641602 1994 46.0064697265625 1995 46.7800407409668 1996 47.6877593994141 1997 49.2844886779785 1998 50.5691795349121 1999 52.2938804626465 2000 54.0787696838379 2001 56.2760200500488 2002 58.8087692260742 2003 61.1212196350098 2004 62.7027587890625 2005 64.4177627563477 2006 64.3619995117188 2007 65.866828918457 2008 66.723876953125 2009 67.8654708862305 2010 69.1816024780273 2011 70.5712738037109 2012 71.5289764404297 2013 71.5934677124023 2014 71.7093963623047 2015 71.8595962524414 2016 72.714111328125 2017 72.3449935913086 2018 72.2497406005859 2019 72.9436721801758 2020 74.3865814208984 2021 74.7254028320312 2022 74.5098419189453