Year % of male population 1960 0.301087726320975 1961 0.304324217361579 1962 0.306976310747734 1963 0.309125472917495 1964 0.310778652017075 1965 0.311870354887246 1966 0.312504348295836 1967 0.312804214625208 1968 0.313159496596496 1969 0.31256749298073 1970 0.311323349833422 1971 0.310018642059055 1972 0.307967952170524 1973 0.30616441991296 1974 0.306316236947153 1975 0.30906168098029 1976 0.313235433270353 1977 0.31763667347558 1978 0.321717316088136 1979 0.323895807162233 1980 0.322297131922658 1981 0.316259595102846 1982 0.307469512600926 1983 0.295119857566468 1984 0.284000909209715 1985 0.277314627261015 1986 0.272016972326583 1987 0.272779506021789 1988 0.279546099828607 1989 0.28539826209556 1990 0.289760736525615 1991 0.294545444006348 1992 0.300250020526476 1993 0.30575196619028 1994 0.306763711135265 1995 0.306047086096771 1996 0.307497645951036 1997 0.308297294968229 1998 0.31290896798963 1999 0.318900754798853 2000 0.328151574037587 2001 0.332090360350465 2002 0.323246261073827 2003 0.315937955708048 2004 0.309935946002574 2005 0.304443532849348 2006 0.301818241278418 2007 0.300825759342441 2008 0.298075331318983 2009 0.299104314162344 2010 0.299322668842134 2011 0.292816093463081 2012 0.284873675863966 2013 0.276485371772745 2014 0.26995857081472 2015 0.265698499769994 2016 0.264062863648962 2017 0.265250138913165 2018 0.26739429523253 2019 0.268553678202198 2020 0.266492013755673 2021 0.260633797162674 2022 0.255952823119059 2023 0.253086862991776