Year % of female population 1960 18.3224208847477 1961 18.6006755216644 1962 18.7370727611558 1963 18.7207125145489 1964 18.5826629847521 1965 18.3630069238378 1966 18.1108905857393 1967 17.8611113795136 1968 17.6092520437008 1969 17.3485177287566 1970 17.0217915421635 1971 16.6515255792613 1972 16.3187375012442 1973 16.0470243780517 1974 15.8498013268372 1975 15.8026879338355 1976 15.8734911414713 1977 15.9664785648109 1978 16.0912678672106 1979 16.2255682050027 1980 16.2449018915187 1981 16.0944849575402 1982 15.8687675037432 1983 15.6098826473775 1984 15.3280067283431 1985 15.0390783859924 1986 14.7476719954533 1987 14.4511038289065 1988 14.1491097396609 1989 13.8409250175193 1990 13.5171239513829 1991 13.1870909562912 1992 12.8043853033078 1993 12.3559632540357 1994 11.8956184384707 1995 11.4391598152215 1996 11.0027319250452 1997 10.6183837639314 1998 10.3213003213003 1999 10.1520337797322 2000 9.99702487944564 2001 9.68613952228182 2002 9.24895092917701 2003 8.77372076489782 2004 8.27768183849192 2005 7.84738560522399 2006 7.54789043384854 2007 7.33195621720445 2008 7.18128295825632 2009 7.09990015857168 2010 6.93775158975556 2011 6.69084462571477 2012 6.48962454861171 2013 6.29722344746204 2014 6.07902908749038 2015 5.94636258529618 2016 5.91827069449613 2017 5.88621370551542 2018 5.84774429794693 2019 5.79990333494441 2020 5.74266405636482 2021 5.68230048009348 2022 5.61715561715562 2023 5.53938097979549