Year % of relevant age group 1970 95.65449 1971 96.15172 1972 96.81683 1973 97.44983 1974 97.85006 1975 99.23354 1976 99.78678 1977 100.7678 1978 100.0349 1979 101.7491 1980 101.4228 1981 101.5448 1982 101.2418 1983 102.6539 1984 103.0831 1985 103.2213 1986 102.8702 1987 101.8607 1988 101.2998 1989 100.0395 1990 101.0841 1991 98.57558 1992 98.42234 1993 99.00405 1994 98.93851 1995 99.20842 1996 99.28982 1997 100.2005 1998 100.4147 1999 100.2567 2000 101.8774 2001 103.2625 2002 105.0977 2003 109.3934 2004 108.485 2005 108.7114 2006 108.1798 2007 109.1508 2008 109.5977 2009 106.7632 2010 107.3538 2011 106.7666 2012 105.987 2013 105.4848 2014 104.5231 2015 104.2481 2016 104.9381 2017 103.3512 2018 103.5473