Year % of female population 1960 3.63111877396678 1961 3.746009969027 1962 3.86056883930975 1963 3.95799845055532 1964 4.01727701928609 1965 4.03903775240445 1966 4.02111270206416 1967 3.96125790846482 1968 3.88201323118906 1969 3.81560728738436 1970 3.77270922718854 1971 3.75121416504812 1972 3.75080179123892 1973 3.76163348591074 1974 3.77018135809268 1975 3.77169660526926 1976 3.76966679140778 1977 3.76398211064508 1978 3.74718072864159 1979 3.72092933365158 1980 3.69354859207996 1981 3.66843267970135 1982 3.64889389447401 1983 3.63297940264743 1984 3.61570009709121 1985 3.59628259590476 1986 3.57810634031633 1987 3.52490165071829 1988 3.48652713153621 1989 3.49737074404423 1990 3.51187174285829 1991 3.52344380018411 1992 3.52207186929005 1993 3.47857496360382 1994 3.40515961995103 1995 3.26867011566704 1996 3.07234220582372 1997 2.88798185553751 1998 2.74883426635996 1999 2.63261981334833 2000 2.55376304449757 2001 2.52972415520432 2002 2.51767252714459 2003 2.51509629356089 2004 2.5244408564391 2005 2.54497146565781 2006 2.57156613381073 2007 2.60335136356929 2008 2.64475652773915 2009 2.68681385494057 2010 2.7169603262522 2011 2.7352675911008 2012 2.74177698507134 2013 2.73766868656794 2014 2.72686738719495 2015 2.71381382309512 2016 2.70309046083565 2017 2.70211855605572 2018 2.71800289818953 2019 2.7597446951978 2020 2.83550807625014 2021 2.94867120294841 2022 3.09919258757408 2023 3.28188530045237