Year % of female population 1960 0.27564961799717 1961 0.277330898935176 1962 0.279517619388693 1963 0.2818591551809 1964 0.283983930311475 1965 0.28582172684196 1966 0.287523485116397 1967 0.289090893558167 1968 0.290640336806669 1969 0.292364908929113 1970 0.294416907972295 1971 0.296682580846768 1972 0.299235948888233 1973 0.301440023939993 1974 0.303005825336534 1975 0.304811382121882 1976 0.30742321376143 1977 0.311113201491794 1978 0.344269858640811 1979 0.406420002660614 1980 0.465209848140354 1981 0.516867687326719 1982 0.562583894372284 1983 0.601460382506322 1984 0.631715773757064 1985 0.654594584317318 1986 0.66486231402996 1987 0.77753163553887 1988 0.828189584934756 1989 0.733734488526067 1990 0.662896504283762 1991 0.610787329588651 1992 0.574347665945261 1993 0.55068099699525 1994 0.536914132186666 1995 0.564091996849061 1996 0.624800934482573 1997 0.678579431312862 1998 0.714046254527722 1999 0.798828259569843 2000 0.920519700034017 2001 1.00820335170032 2002 1.08170292677659 2003 1.14883556640202 2004 1.20963962624204 2005 1.25972644326129 2006 1.29547956038924 2007 1.30812554559577 2008 1.262139729302 2009 1.18043964740028 2010 1.11078542120712 2011 1.05128938782643 2012 1.00051102005281 2013 0.957381235989157 2014 0.921074394506586 2015 0.89092879846175 2016 0.866377652676208 2017 0.846565713050351 2018 0.830357661827846 2019 0.816605225592961 2020 0.801622485195395 2021 0.778852644432271 2022 0.75173736485022 2023 0.731158963651408