Year % of female population 1960 17.7790430826681 1961 18.1107933729971 1962 18.4576017737035 1963 18.8197817774731 1964 19.1758155549124 1965 19.7895536446781 1966 20.6902709652841 1967 21.4517339344267 1968 21.8656986755744 1969 21.9061424577 1970 21.6553891297683 1971 21.2839572944151 1972 20.7923635283462 1973 19.8603244029886 1974 19.0618290906303 1975 18.7781538364317 1976 18.6317139126376 1977 18.5858397176049 1978 18.5404968487512 1979 18.4433914112311 1980 18.2895444224023 1981 18.0519796186601 1982 17.7613155857847 1983 17.4419592532338 1984 17.0304496356888 1985 16.6089286881496 1986 16.295525013913 1987 16.0316362691017 1988 15.770081832007 1989 15.4631115532323 1990 15.0791339679203 1991 14.6320192912664 1992 14.1420167550701 1993 13.6252666173846 1994 13.1025671665434 1995 12.6031609532959 1996 12.1480151427659 1997 11.7414107445096 1998 11.3829917446378 1999 11.0696227703482 2000 10.8023200553498 2001 10.6316806612409 2002 10.5824271581333 2003 10.6257770641852 2004 10.728797126161 2005 10.8260252785141 2006 10.8812829296121 2007 10.9081626089741 2008 10.9051676937908 2009 10.8691603441746 2010 10.847415253932 2011 11.2160738954962 2012 11.4682108366753 2013 11.1577497545277 2014 10.8898209374617 2015 10.6147339822102 2016 10.2662871136271 2017 9.98374370627274 2018 9.77311972859604 2019 9.51303302762034 2020 9.24088077787236 2021 8.99141055668787 2022 8.75695596115508 2023 8.53256896403346