Year % of female population 1960 17.07538069037021 1961 17.13855045464206 1962 17.2061860536767 1963 17.272901044965508 1964 17.33497189189543 1965 17.38673040037445 1966 17.427128105514942 1967 17.453443099360317 1968 17.47153923568216 1969 17.49219442064695 1970 17.515538162320198 1971 17.551295928439348 1972 17.60685195427678 1973 17.67916816629806 1974 17.770125539185813 1975 17.87722091051229 1976 17.970255223037295 1977 18.059335261748082 1978 18.167611182970855 1979 18.272130462279904 1980 18.36355825387837 1981 18.431325731877312 1982 18.45558744944821 1983 18.454191591479383 1984 18.430026316076496 1985 18.364426900230757 1986 18.268397484099243 1987 18.144296566966045 1988 17.97380000192408 1989 17.820446837594545 1990 17.724173001318142 1991 17.649999564782703 1992 17.59440493037368 1993 17.55048808386043 1994 17.50873522467246 1995 17.466100994007007 1996 17.427411455892795 1997 17.39074019244314 1998 17.3523406186897 1999 17.332947308525583 2000 17.340789975920522 2001 17.365834743781143 2002 17.398815595373126 2003 17.43287895094893 2004 17.455657037952957 2005 17.466218136641846 2006 17.474093037521598 2007 17.474265159138366 2008 17.467616951503217 2009 17.455239798635457 2010 17.429473896765177 2011 17.38969350857912 2012 17.336389273582487 2013 17.253089148869442 2014 17.133477922180685 2015 16.989123911174456 2016 16.826607229016854 2017 16.65320577521222 2018 16.48461345008581 2019 16.327875316906596 2020 16.177410745883684 2021 16.035700414031577 2022 15.898054098113178 2023 15.755561163351613