Year % of female population 1960 3.50582315816869 1961 3.50650588123194 1962 3.49796365590953 1963 3.4735930387141 1964 3.42139030100007 1965 3.33952115759912 1966 3.23887014007674 1967 3.12477558348294 1968 3.01191690422017 1969 2.91640872124085 1970 2.8481065196819 1971 2.78971710601579 1972 2.7337422126226 1973 2.6875129360442 1974 2.64582743098184 1975 2.61137903763549 1976 2.5973531806732 1977 2.6039021183782 1978 2.62862673500363 1979 2.66589936337805 1980 2.69990639010691 1981 2.72369532521581 1982 2.72478833994213 1983 2.68756413356776 1984 2.62004554936748 1985 2.5480206283166 1986 2.48064090320147 1987 2.42266142162747 1988 2.38827804804421 1989 2.37668466669692 1990 2.36776293536063 1991 2.35113293215442 1992 2.32615109331232 1993 2.28511180240934 1994 2.22543441174367 1995 2.16834004509908 1996 2.13702650646611 1997 2.16115883631344 1998 2.24838436751814 1999 2.36871848374196 2000 2.49945316574967 2001 2.62885674257974 2002 2.74152980043682 2003 2.83029673635822 2004 2.90909090909091 2005 2.99114955389162 2006 3.08142345833174 2007 3.18594108135661 2008 3.31104117492788 2009 3.44977011091392 2010 3.58844462401517 2011 3.71758065300959 2012 3.83182132057052 2013 3.926115837315 2014 3.99946369531047 2015 4.05521350657191 2016 4.10323563333324 2017 4.15650220841886 2018 4.22440922053482 2019 4.31967735088092 2020 4.44315832145653 2021 4.57871081813175 2022 4.70684851296734 2023 4.81371474427981