Year % of female population 1960 30.7752611015182 1961 30.5817406734295 1962 30.3833170418898 1963 30.1914603468752 1964 30.0159005124122 1965 29.8463922740082 1966 29.6691164126309 1967 29.4936287284961 1968 29.3266009582544 1969 29.1826962202391 1970 29.0685665901294 1971 28.9949256548769 1972 28.9568071183674 1973 28.9631316014974 1974 29.0315714020694 1975 29.1235663406886 1976 29.2312326703556 1977 29.3525029785602 1978 29.4735221172701 1979 29.6003819098408 1980 29.7267267900779 1981 29.8344045442387 1982 29.914647251405 1983 29.9685640754584 1984 29.990409792467 1985 29.9752969000777 1986 29.9163129310453 1987 29.8155481084684 1988 29.6768570353834 1989 29.4994739030481 1990 29.3091086892527 1991 29.1105071579398 1992 28.8934459301991 1993 28.6712023723686 1994 28.451743842458 1995 28.2318738213486 1996 28.0063898748061 1997 27.7786707609164 1998 27.5557448490711 1999 27.3463361037516 2000 27.1448025516513 2001 26.9338321163858 2002 26.7079648110104 2003 26.4769804946392 2004 26.2419082518496 2005 25.9932329039624 2006 25.7331846394095 2007 25.4697966475259 2008 25.1995092045243 2009 24.928636588249 2010 24.6833636231612 2011 24.4715438287489 2012 24.2853735060805 2013 24.1189542424786 2014 23.9593722763755 2015 23.8052583088936 2016 23.6593685177051 2017 23.4994500331306 2018 23.2975700545356 2019 23.0563027423242 2020 22.7857207896352 2021 22.500326142524 2022 22.214714630099 2023 21.9159494494658