Year % of male population 1960 32.197415935168 1961 31.5041646251837 1962 30.721772936152 1963 29.9697239651183 1964 29.2752363913991 1965 28.6522058690089 1966 28.1080741600717 1967 27.5860636037323 1968 27.0695726981844 1969 26.5611378304972 1970 25.9971211007228 1971 25.3572852606472 1972 24.707281318646 1973 24.1370221876122 1974 23.6502262933244 1975 23.2415940401835 1976 22.8931399404516 1977 22.5512127774085 1978 22.1813907324823 1979 21.8024391472014 1980 21.4642890062996 1981 21.1643404056408 1982 20.9010721951898 1983 20.7048847124625 1984 20.5817211790484 1985 20.5005040009353 1986 20.4325848239495 1987 20.3819876692713 1988 20.3962379421691 1989 20.4098695391891 1990 20.3507175251716 1991 20.2535243432494 1992 20.1652125203174 1993 20.1038328916316 1994 20.0425007123504 1995 19.9651708902475 1996 19.8510208962543 1997 19.6680322665898 1998 19.4196737727075 1999 19.1783730664298 2000 18.9836295297869 2001 18.8179548936997 2002 18.6675352593609 2003 18.4977152065534 2004 18.3101279050285 2005 18.1067931855851 2006 17.8963849710808 2007 17.693513392478 2008 17.5070573076614 2009 17.3580674285697 2010 17.2408158953724 2011 17.1580156584534 2012 17.1029985025817 2013 17.0777810465028 2014 17.050484428106 2015 16.9923153342142 2016 16.9035865104384 2017 16.7932845714934 2018 16.6525338164043 2019 16.4453643920831 2020 16.21115573225 2021 15.9690284423308 2022 15.7026523072315 2023 15.4313778287609