Year % of female population 1960 38.1429716995584 1961 39.7658724982713 1962 41.0343368403454 1963 41.9249882455366 1964 42.543766221047 1965 42.9315329665792 1966 43.1536567493781 1967 43.2230645662155 1968 43.1224168461664 1969 42.8707081169299 1970 42.4724906670009 1971 41.9306262877376 1972 41.2477863770252 1973 40.4343372370621 1974 39.5178619582867 1975 38.524487897272 1976 37.365049996095 1977 36.1201396955541 1978 34.957144852607 1979 34.0202466675132 1980 33.3207614882849 1981 32.7281251623779 1982 32.3205837211431 1983 32.0186805925389 1984 31.8369258980512 1985 31.7910998828071 1986 31.8340383258881 1987 31.966621820805 1988 32.1356991807832 1989 32.4357053628797 1990 32.6869013984324 1991 32.7552267935215 1992 32.758153728395 1993 32.7086788522718 1994 32.5908212847738 1995 32.3726619677475 1996 32.0382516731285 1997 31.5963805771431 1998 31.0381332360313 1999 30.3050009770269 2000 29.4059144635796 2001 28.4208074273857 2002 27.4062795000958 2003 26.4059918548594 2004 25.4866082960848 2005 24.6616596500472 2006 23.9285811047592 2007 23.3304755110188 2008 22.865099430079 2009 22.4777200294095 2010 22.1776259416829 2011 22.027720123359 2012 22.0279191184718 2013 22.1333065757892 2014 22.2888795526189 2015 22.456459407276 2016 22.5965077248571 2017 22.6323025327038 2018 22.5573793309509 2019 22.4447389662478 2020 22.2845080051543 2021 22.0175050021402 2022 21.6261867102554 2023 21.1412038735827