Year % of female population 1960 24.3720292829218 1961 23.888990214786 1962 23.458718778217 1963 23.1835160581797 1964 23.0608177633133 1965 23.0103872270294 1966 23.0355478499154 1967 23.054206882344 1968 22.9491864724944 1969 22.7726580723674 1970 22.5898138767651 1971 22.43199660471 1972 22.3169485179581 1973 22.2004538914517 1974 22.0660754841535 1975 21.9170036069651 1976 21.7058674230154 1977 21.4074349700702 1978 21.0292186848825 1979 20.5948334059633 1980 20.1039882389437 1981 19.5245870739698 1982 18.9497756005623 1983 18.4855504369941 1984 18.111103152359 1985 17.7858419278929 1986 17.4528773313404 1987 17.0992495122147 1988 16.7992435387525 1989 16.5805139514015 1990 16.405942926002 1991 16.312702066249 1992 16.3421911094968 1993 16.4331321985039 1994 16.5623649618955 1995 16.7441018524105 1996 16.9553652816197 1997 17.1778767922457 1998 17.3980711923277 1999 17.6069759500355 2000 17.7902548915495 2001 17.9288256017642 2002 18.0227295011294 2003 18.0734090843646 2004 18.0742926742149 2005 18.0326567010204 2006 17.9702552931881 2007 17.8750895137521 2008 17.7498797010246 2009 17.5944724646525 2010 17.4129888243707 2011 17.2233272345193 2012 17.0157721431136 2013 16.8012115478833 2014 16.591423866913 2015 16.3922073601585 2016 16.229970202175 2017 16.1101204818442 2018 15.9985691443742 2019 15.8781266380079 2020 15.7576451934949 2021 15.6544673188235 2022 15.5522584085144 2023 15.4457285122539