Year % of female population 1960 14.6513120836179 1961 14.8806407699791 1962 14.8311057576937 1963 14.4076720689598 1964 13.5445446405948 1965 12.4248833665756 1966 11.3623824644313 1967 10.8710300467726 1968 11.3917908273064 1969 12.4205591936079 1970 13.4522518894539 1971 14.4675089730319 1972 14.8685741774015 1973 14.5753951079958 1974 14.3219863064459 1975 14.2532394507382 1976 14.1941565387237 1977 14.1355097246702 1978 13.8853568777709 1979 13.3506878569289 1980 12.6071996696859 1981 11.7498896417269 1982 10.9037198939909 1983 10.0970602839458 1984 9.48188014856586 1985 9.14106353113903 1986 9.01899411793056 1987 9.11128012995751 1988 9.22450920748971 1989 9.22474434431541 1990 9.23848430061087 1991 9.32460066447174 1992 9.45745267459852 1993 9.63721884846267 1994 9.85929449644235 1995 10.0574998776628 1996 9.97300573621898 1997 9.50615277214012 1998 8.94879805209664 1999 8.36248543401033 2000 7.67635821101919 2001 7.11617462003957 2002 6.77416396677742 2003 6.49276770553973 2004 6.24830298806078 2005 6.06827006847414 2006 5.92972993668559 2007 5.80275411794993 2008 5.70675172577679 2009 5.64494121299488 2010 5.58624160312062 2011 5.55237619654223 2012 5.57437010889214 2013 5.6335304238158 2014 5.71504088613026 2015 5.78827884927597 2016 5.83894700086691 2017 5.91050619922652 2018 5.97419072042001 2019 6.00322774956619 2020 6.00796848036072 2021 6.01611058345104 2022 6.01920727345325 2023 5.91749479300454