Year % of relevant age group 1974 23.5950698852539 1975 24.1591796875 1976 24.8662700653076 1977 25.9096508026123 1978 27.7668590545654 1979 28.4167594909668 1980 29.2914791107178 1981 30.2134399414062 1982 31.0700492858887 1983 32.2162399291992 1984 33.540958404541 1985 35.4406318664551 1986 37.3325614929199 1987 38.4529190063477 1988 40.3955001831055 1989 42.1400108337402 1990 44.1347694396973 1991 45.0970497131348 1992 46.9538917541504 1993 48.8222312927246 1994 51.8034782409668 1995 53.3500785827637 1996 54.6763801574707 1997 55.7265815734863 1998 57.3248710632324 1999 58.8980903625488 2000 60.4614486694336 2001 61.7441101074219 2002 63.7075614929199 2003 65.7684783935547 2004 66.5680465698242 2005 67.749870300293 2006 66.9801483154297 2007 67.7839279174805 2008 68.0704193115234 2009 70.0310134887695 2010 69.5101776123047 2011 71.4572067260742 2012 76.0615997314453 2013 71.3636627197266 2014 70.2038803100586 2015 70.4109497070312 2016 70.5221481323242 2017 70.2509765625 2018 70.7626037597656 2019 71.4664916992188 2020 72.1403579711914 2021 74.2871475219727 2022 74.3598022460938