Year % of female population 1960 0.312327371916668 1961 0.314751260726684 1962 0.31691684465259 1963 0.318924106458278 1964 0.321268812364533 1965 0.323894610196815 1966 0.326488834339458 1967 0.328556525693354 1968 0.330889066385184 1969 0.333925836791174 1970 0.336977732210516 1971 0.340227747429376 1972 0.343768911936286 1973 0.347351632492795 1974 0.350789628725113 1975 0.354191216282675 1976 0.358425675334479 1977 0.36359750290688 1978 0.368511999078884 1979 0.37170896657044 1980 0.372929209434587 1981 0.372600614973831 1982 0.371170104939167 1983 0.369313654011963 1984 0.367759234777022 1985 0.366866756925601 1986 0.365941818273351 1987 0.365310909836067 1988 0.365436592644616 1989 0.365891246027413 1990 0.366254362929731 1991 0.366187086398566 1992 0.365581358009045 1993 0.364938206694925 1994 0.364055850333431 1995 0.362822821175586 1996 0.361823348072349 1997 0.360933808581082 1998 0.359677550712458 1999 0.358380727635081 2000 0.357462489861893 2001 0.356592664652286 2002 0.355581998328579 2003 0.354576958840147 2004 0.353544658128389 2005 0.352568553797059 2006 0.351761098833529 2007 0.350883724917676 2008 0.34959865525776 2009 0.348371596420963 2010 0.347536014172726 2011 0.347030588141749 2012 0.346896759003772 2013 0.347074078542489 2014 0.347641907717185 2015 0.348398739870182 2016 0.349205318117792 2017 0.350396176880787 2018 0.35207104701754 2019 0.353882502923455 2020 0.354065309727466 2021 0.350913494011943 2022 0.34994702482097 2023 0.352885926169328