Year % female 1980 18.5127201080322 1981 18.8493499755859 1982 19.0403003692627 1983 19.3444595336914 1984 19.8499202728271 1985 20.1191692352295 1986 20.5287494659424 1987 20.8476600646973 1988 20.7973899841309 1989 20.9414901733398 1990 20.9644508361816 1991 20.7678108215332 1992 20.561559677124 1993 20.7144603729248 1994 21.3582992553711 1995 21.9653091430664 1996 22.5289192199707 1997 23.2289199829102 1998 24.137300491333 1999 24.7224998474121 2000 24.6348705291748 2001 24.3966693878174 2002 24.8657398223877 2003 24.0363597869873 2004 23.6634101867676 2005 23.489709854126 2006 23.2002506256104 2007 23.5818290710449 2008 23.1378707885742 2009 21.7880992889404 2010 20.9843902587891 2011 21.0764904022217 2012 21.3952598571777 2013 21.6246395111084 2014 21.5016193389893 2015 22.4733009338379 2016 22.8707904815674 2017 22.5238704681396 2018 22.7568492889404 2019 23.0250701904297 2020 22.8102703094482 2021 22.6952991485596