Year % of female population 1960 36.4364736347501 1961 37.6474135157593 1962 38.4397882914902 1963 38.8757728177237 1964 39.0847691717771 1965 39.0914277707035 1966 38.9085144542572 1967 38.59569769012 1968 38.1760936430264 1969 37.6483804530987 1970 37.0152073020934 1971 36.261816911556 1972 35.3825891852869 1973 34.4134782330957 1974 33.3849330832164 1975 32.344297739606 1976 31.4112343503911 1977 30.6889762048886 1978 30.1463385825647 1979 29.6435454444893 1980 29.2391997907386 1981 29.0374865629312 1982 28.9781376723454 1983 29.0303713217565 1984 29.1115960661346 1985 29.1781949490609 1986 29.2315338463776 1987 29.2485783283596 1988 29.2509841661658 1989 29.0596199262634 1990 28.9234376390403 1991 28.9871875854346 1992 29.0740597616861 1993 29.0880202997447 1994 28.9070947291947 1995 28.5560089554373 1996 28.0689269557261 1997 27.5131441062895 1998 26.8229280446792 1999 25.9733729369265 2000 24.9923605052173 2001 23.9641392944581 2002 22.9996369030568 2003 22.086632974402 2004 21.1773429406147 2005 20.2273659125488 2006 19.2284337859494 2007 18.2858907907519 2008 17.5589749167324 2009 17.1055712014521 2010 16.8303120702989 2011 16.6535243366022 2012 16.5982995652499 2013 16.6574703797404 2014 16.8095483053403 2015 17.0054319341001 2016 17.198756938585 2017 17.3711597954781 2018 17.4916576032226 2019 17.5597444486277 2020 17.5873719601337 2021 17.644275729484 2022 17.6831011431396 2023 17.6173080948145