Year % of female population 1960 10.3559192132058 1961 9.56412609016497 1962 8.54029122450032 1963 7.42184594867028 1964 6.2301878784911 1965 5.15065081916184 1966 4.46941841394348 1967 4.27511325498437 1968 4.52311682589462 1969 5.16132860430352 1970 6.01836436498392 1971 6.83550639151561 1972 7.47811385829822 1973 7.94993290721483 1974 8.34349910824541 1975 8.70465754537152 1976 9.03303309106222 1977 9.40789839080481 1978 9.93372703677445 1979 10.5010229945149 1980 10.9773806477768 1981 11.3113103425892 1982 11.4958308985218 1983 11.5492917883024 1984 11.4664026560574 1985 11.2593746602371 1986 10.9917961046373 1987 10.6254437707585 1988 10.2294162881077 1989 9.79283397237638 1990 9.35769327646896 1991 8.97699214373078 1992 8.66845891926207 1993 8.41286858913248 1994 8.23813675931764 1995 8.18243948737639 1996 8.15827061743364 1997 8.18614532477167 1998 8.24060726056814 1999 8.32548031617209 2000 8.4189087437922 2001 8.52360778426384 2002 8.64018814560019 2003 8.78284564436512 2004 9.00106204483591 2005 9.30024795083645 2006 9.62509277243339 2007 9.93899259785936 2008 10.206158675507 2009 10.33760349546 2010 10.3172371717941 2011 10.1946109291525 2012 9.97079118185977 2013 9.67035646653947 2014 9.31278788095569 2015 8.90506262548093 2016 8.45788134438433 2017 7.98866815576086 2018 7.51535514859048 2019 7.06149528408622 2020 6.66514315562665 2021 6.33801603594649 2022 6.08757788519326 2023 5.93204220230703