Year % of female population 1960 18.3222551453512 1961 18.4912028500891 1962 18.622244908843 1963 18.6867298965397 1964 18.7401381027519 1965 18.7865796042704 1966 18.8041761109966 1967 18.8061518701123 1968 18.7920556029625 1969 18.7798223350254 1970 18.7982588127481 1971 18.9878006779415 1972 19.2842766851453 1973 19.5027159447996 1974 19.6198627282074 1975 19.5625 1976 19.3591246580696 1977 19.1325773766123 1978 18.9302747575312 1979 18.750321828642 1980 18.603138466542 1981 18.4795117698343 1982 18.3577298029629 1983 18.2362067845074 1984 18.1202131789786 1985 18.0099219874271 1986 17.9041410117107 1987 17.7968949526178 1988 17.6754552644283 1989 17.5450174100481 1990 17.409915193506 1991 17.268583286337 1992 17.1288418469276 1993 17.0011262714549 1994 16.8923862694913 1995 16.8052384558828 1996 16.7231765820763 1997 16.6254014552835 1998 16.5098839097256 1999 16.3690821590042 2000 16.2326163322266 2001 16.1214777825752 2002 16.0191739973845 2003 15.9161804923535 2004 15.7956694753487 2005 15.6670749245719 2006 15.5586409329514 2007 15.4726912367113 2008 15.3986113101779 2009 15.3375366591728 2010 15.2992569360859 2011 15.2707152036799 2012 15.2437857645721 2013 15.2282790540576 2014 15.2166980970341 2015 15.1796501747121 2016 15.0970637265366 2017 14.9677979386229 2018 14.7928305400372 2019 14.5827398306472 2020 14.358506226522 2021 14.1389645186218 2022 13.9378564394014 2023 13.7490432420132