Year % of female population 1960 3.9025994081838 1961 3.82292969788907 1962 3.75042785193878 1963 3.69844634141599 1964 3.66718594277642 1965 3.65203474639183 1966 3.64818841276866 1967 3.65280115412359 1968 3.65939411453065 1969 3.66430945204421 1970 3.6721712063766 1971 3.69533456705951 1972 3.72948051566676 1973 3.7653033106326 1974 3.79453681710214 1975 3.81537297684697 1976 3.82308470265453 1977 3.80312071607128 1978 3.75703174184115 1979 3.69494682756574 1980 3.62345717170468 1981 3.53133481371823 1982 3.43465724496426 1983 3.34315242897798 1984 3.25562621827561 1985 3.18866339824599 1986 3.14457431654536 1987 3.11518838304553 1988 3.1040941932031 1989 3.12393718115435 1990 3.16793893129771 1991 3.22529091544724 1992 3.29134417943453 1993 3.37666145426114 1994 3.49003953181924 1995 3.62545318164771 1996 3.77295396785967 1997 3.92833053077588 1998 4.08743809775829 1999 4.23438675696012 2000 4.36545466463158 2001 4.53858496902754 2002 4.81781866602106 2003 5.12708760281531 2004 5.40642582855249 2005 5.67936473085227 2006 5.91747705171317 2007 6.08397291196388 2008 6.17739142916095 2009 6.21379298051728 2010 6.19367176018556 2011 6.09823569189156 2012 5.94057683609922 2013 5.76338343597916 2014 5.57878032965908 2015 5.39722785665991 2016 5.25218352495876 2017 5.15695811683461 2018 5.09156755422034 2019 5.05384508617663 2020 5.0351032042302 2021 5.01417590978821 2022 4.99788731832931 2023 5.0061369125391