Year % of female population 1960 10.34701315164 1961 10.2037698958238 1962 10.1813770452999 1963 10.3049934070974 1964 10.5429713524317 1965 10.8484229756596 1966 11.1073537445049 1967 11.2751779494169 1968 11.4083089985522 1969 11.5650158866671 1970 11.8291092061126 1971 12.4108286080117 1972 13.205203487059 1973 13.9336386995866 1974 14.5486764868756 1975 14.980300662514 1976 15.1594870108517 1977 14.9973700359428 1978 14.5972417427969 1979 14.0859931416513 1980 13.2034253757427 1981 11.9401696488312 1982 10.5753646677472 1983 9.29296759785952 1984 8.26133122358477 1985 7.57060750262653 1986 7.222131548882 1987 7.12958849897024 1988 7.21132723569118 1989 7.40075054315623 1990 7.5975158199949 1991 7.75305656845348 1992 7.8974458580169 1993 8.04032741838729 1994 8.21212238126471 1995 8.38303767268249 1996 8.5404948841495 1997 8.74932903918411 1998 9.00712752912324 1999 9.27665120558132 2000 9.45493504754252 2001 9.53179168730237 2002 9.58477968094994 2003 9.62976955043445 2004 9.65519837386133 2005 9.55388866956178 2006 9.30792528076149 2007 9.01440271109856 2008 8.74189168803741 2009 8.52647286602066 2010 8.27569263332955 2011 7.98851226240411 2012 7.75511747027804 2013 7.5853326269583 2014 7.48341860905818 2015 7.34920574743147 2016 7.15760365172264 2017 7.01548479915193 2018 6.95698253184201 2019 6.94836036104225 2020 6.92934782608696 2021 6.87429643527205 2022 6.80203613581697 2023 6.74071876274895