Year % of female population 1960 27.5274434043285 1961 27.9835906676459 1962 28.2777748751291 1963 28.3600443670767 1964 28.2360214287955 1965 28.0008618827684 1966 27.7173664885542 1967 27.3739813103057 1968 26.9666439218283 1969 26.4838216519073 1970 25.9459399323592 1971 25.390769386745 1972 24.8139933702983 1973 24.2177602210305 1974 23.6323129664099 1975 23.0622713745184 1976 22.5087087132226 1977 22.0029293437667 1978 21.5900871784824 1979 21.308223109575 1980 21.1518710986162 1981 21.0843621428379 1982 21.0816153044682 1983 21.1394324562035 1984 21.2213333194678 1985 21.2872883489576 1986 21.3655062288098 1987 21.4423023510427 1988 21.5058635783802 1989 21.5485071255998 1990 21.5256896685411 1991 21.4214798987024 1992 21.2423239743759 1993 20.9807056505252 1994 20.6191386505542 1995 20.171781888116 1996 19.6570069358937 1997 19.0677944708959 1998 18.4148066027831 1999 17.7553617730161 2000 17.1097487364176 2001 16.4385257923597 2002 15.7674538527726 2003 15.1408713285829 2004 14.5762388173049 2005 14.1182775466425 2006 13.7763872650261 2007 13.5491280109988 2008 13.4492474030286 2009 13.4869110487802 2010 13.6233708424474 2011 13.811059994446 2012 14.0555818179969 2013 14.3310044338663 2014 14.5929076430237 2015 14.8287239855441 2016 15.0391835980136 2017 15.1927659597699 2018 15.260856897505 2019 15.2795595472313 2020 15.2875662265105 2021 15.274019046077 2022 15.2018615702523 2023 15.0621108322461