Year % of female population 1960 25.1625120809503 1961 24.8494448524754 1962 24.5029946808685 1963 24.2636268664219 1964 24.1230721771691 1965 24.0277025282503 1966 23.9672090344449 1967 23.9176102305041 1968 23.8519874156384 1969 23.7989948760874 1970 23.7268317076189 1971 23.6232637167745 1972 23.5207905199508 1973 23.3910806588296 1974 23.2291658873435 1975 23.0415709626758 1976 22.8010146763037 1977 22.5070828518762 1978 22.1769058656573 1979 21.8190614770424 1980 21.4327147367821 1981 21.0299928282432 1982 20.6188834158303 1983 20.1815108208097 1984 19.7244206350212 1985 19.3162918767236 1986 18.9483200241073 1987 18.6219602063375 1988 18.4127110965918 1989 18.2967756854369 1990 18.2639733145681 1991 18.3171939045103 1992 18.4179862884114 1993 18.5456824546403 1994 18.6588723123277 1995 18.7630517823936 1996 18.8724495393335 1997 18.9747229899014 1998 19.0766490809653 1999 19.1915102071243 2000 19.2922921573891 2001 19.332066608029 2002 19.320278550948 2003 19.2588207522893 2004 19.1457472525218 2005 18.9918271973485 2006 18.8300232742689 2007 18.6892796214038 2008 18.5663654006888 2009 18.4567508105604 2010 18.3431972017947 2011 18.1980981820924 2012 18.0512569170213 2013 17.9295522199187 2014 17.7974055277522 2015 17.6616611491551 2016 17.5560571974335 2017 17.4584348894105 2018 17.3083132951175 2019 17.109923312123 2020 16.8927152283113 2021 16.6541330286168 2022 16.4012480383326 2023 16.1361729027276