Year % of female population 1960 38.207530238608 1961 38.37689682948462 1962 38.52333760185033 1963 38.67923699332148 1964 38.8100214369599 1965 38.91761370383889 1966 39.0167903309184 1967 39.11482040617154 1968 39.216746944754355 1969 39.31679162620888 1970 39.41407691737101 1971 39.52438191974964 1972 39.65260171090058 1973 39.77554152089793 1974 39.87556357493262 1975 39.970598878347964 1976 40.07361102056635 1977 40.16495198815787 1978 40.23649379216996 1979 40.31618406324749 1980 40.390820296966076 1981 40.46224794725675 1982 40.55545177138599 1983 40.654210235046314 1984 40.74743269233456 1985 40.828949022527325 1986 40.894315973227705 1987 40.95013078903711 1988 40.989530476165 1989 41.00613513225934 1990 41.03501733501729 1991 41.00772287122399 1992 40.988428877939754 1993 40.99337520256793 1994 40.93156571715111 1995 40.83805155648928 1996 40.80740360628006 1997 40.77958182996407 1998 40.70552260655178 1999 40.609955310353406 2000 40.51324521597686 2001 40.416275685848674 2002 40.34627743476667 2003 40.29681487710699 2004 40.23871950213898 2005 40.17517804621312 2006 40.107152863990784 2007 40.058341447491216 2008 40.03787151350115 2009 40.01863207759859 2010 39.99635000892368 2011 39.979253335473004 2012 39.97215156618404 2013 39.97258626040554 2014 39.96122831980865 2015 39.91888397223294 2016 39.84413295775749 2017 39.744744629685044 2018 39.62926656505572 2019 39.486395497261825 2020 39.31924266814396 2021 39.1471268465038 2022 39.092042248128074 2023 38.85244460414556