Year % female 1972 24.7763900756836 1973 24.2792091369629 1974 23.8562202453613 1975 23.442440032959 1976 23.3509902954102 1977 22.7911796569824 1978 22.571439743042 1979 22.485330581665 1980 22.6494293212891 1981 23.1630001068115 1982 23.3551406860352 1983 23.5085296630859 1984 24.0148105621338 1985 24.4088497161865 1986 25.7921390533447 1987 26.5592193603516 1988 27.1889705657959 1989 27.550609588623 1990 28.1145896911621 1991 28.2390193939209 1992 28.2613792419434 1993 28.4242095947266 1994 28.1489696502686 1995 27.7430591583252 1996 26.5910301208496 1997 25.8812408447266 1998 25.1897792816162 1999 24.8916702270508 2000 24.7232398986816 2001 24.8250408172607 2002 24.3062992095947 2003 24.2151794433594 2004 24.8010101318359 2005 24.2631702423096 2006 24.9389190673828 2007 24.7978801727295 2008 25.0283508300781 2009 25.0954704284668 2010 25.0037593841553 2011 25.6808490753174 2012 25.7263698577881 2013 25.8201694488525 2014 26.1565608978271 2015 27.0207691192627 2016 27.4978408813477 2017 27.3774700164795 2018 27.6100196838379 2019 27.5594291687012 2020 28.1661701202393 2021 28.2277698516846