Year % of female population 1960 13.7295393289406 1961 13.7357030130325 1962 13.7081154367616 1963 13.5125033094705 1964 13.1613756613757 1965 12.6693439132959 1966 12.0584026264346 1967 11.3464550532806 1968 10.5184372256365 1969 9.54224044858473 1970 8.39633953403168 1971 7.37453633216565 1972 6.7370086174411 1973 6.45329990744238 1974 6.46484375 1975 6.68567912731143 1976 6.92685684828429 1977 7.04628790461382 1978 7.03721572476668 1979 6.94596473119712 1980 6.90517607304264 1981 7.01077573863311 1982 7.30532080452298 1983 7.7976403964134 1984 8.41284297568451 1985 9.04553012468846 1986 9.6133378286364 1987 10.0061333012968 1988 10.1585245534498 1989 10.0860423423476 1990 9.80937738487163 1991 9.4072642345172 1992 8.98570757915602 1993 8.54208870032743 1994 8.03911256452501 1995 7.52449102117918 1996 7.01776206581484 1997 6.49847363888713 1998 5.985340236925 1999 5.502153932569 2000 5.01504312362105 2001 4.52645431394832 2002 4.1348032196152 2003 3.87445824485878 2004 3.69505164180733 2005 3.59415684022561 2006 3.58260789655562 2007 3.61607725433903 2008 3.68145289443814 2009 3.79962554107192 2010 3.96719326896381 2011 4.13936977405407 2012 4.29743743325364 2013 4.45068460911028 2014 4.57335803369926 2015 4.67112287053799 2016 4.78123399005072 2017 4.92159793837389 2018 5.08406579909386 2019 5.23461696119512 2020 5.32627123370177 2021 5.27707708312176 2022 5.11168384879725 2023 4.92142763620234