Year % of female population 1960 2.4944295402798 1961 2.5044208754345 1962 2.56031034064735 1963 2.65321360104934 1964 2.7871853177867 1965 2.95521846860458 1966 3.16309932196292 1967 3.41357219888293 1968 3.66353561156144 1969 3.84678784370012 1970 3.94111812914339 1971 3.94056511204117 1972 3.83918739926272 1973 3.69050456893127 1974 3.57626059229838 1975 3.52506538110092 1976 3.53363263865744 1977 3.60846672365273 1978 3.71712698597677 1979 3.7993721196375 1980 3.83579873691336 1981 3.83784135290315 1982 3.81085433027404 1983 3.76958113239005 1984 3.72905143857478 1985 3.69149587891954 1986 3.65483602688305 1987 3.61786552285872 1988 3.58855600056683 1989 3.57415496445581 1990 3.55988018381738 1991 3.53361090167618 1992 3.51225903882029 1993 3.51173591155737 1994 3.53789020847888 1995 3.58067425948063 1996 3.59656696324046 1997 3.60076520367707 1998 3.61281154350678 1999 3.59365910413031 2000 3.57300957205164 2001 3.60041962089423 2002 3.62957387887976 2003 3.61466949185964 2004 3.58092694994699 2005 3.5396625642557 2006 3.48533821410491 2007 3.43888021374918 2008 3.49009345269834 2009 3.65890704162404 2010 3.8160500314959 2011 3.94964840697977 2012 4.12766621038587 2013 4.30059178965354 2014 4.45989614980942 2015 4.65143530693062 2016 4.84328817839926 2017 5.01365580500541 2018 5.19066633734014 2019 5.3731578478593 2020 5.59504669380495 2021 5.8671412759794 2022 6.11154516702434 2023 6.28073655259848