Year % of female population 1960 0.41813753489248 1961 0.423674344677189 1962 0.428195339333572 1963 0.432258004972884 1964 0.436605328226688 1965 0.441172942459142 1966 0.44593426359512 1967 0.450888266772743 1968 0.455460160362203 1969 0.459056225147003 1970 0.461394728945742 1971 0.462557854077395 1972 0.462829093774894 1973 0.462402774656457 1974 0.461401203036392 1975 0.460045044677544 1976 0.458433071153564 1977 0.457098401001881 1978 0.457007784964493 1979 0.456968547657554 1980 0.452552678037346 1981 0.447996439715021 1982 0.446138942282174 1983 0.442811603647351 1984 0.439062648718154 1985 0.437501337450993 1986 0.438503497970963 1987 0.439947899083447 1988 0.441777353762148 1989 0.446213999711968 1990 0.453423739872163 1991 0.462262397452495 1992 0.472878790217375 1993 0.496053243698099 1994 0.531997132141158 1995 0.550626951866259 1996 0.552179198369863 1997 0.554381409038481 1998 0.557799503787401 1999 0.561903976212013 2000 0.565428915909701 2001 0.568722582970969 2002 0.57292137444944 2003 0.580793215579739 2004 0.591724335918026 2005 0.603736544167128 2006 0.613181450831111 2007 0.623267018892064 2008 0.634583250638617 2009 0.640920379030942 2010 0.64149325140871 2011 0.63670537701865 2012 0.626625401945814 2013 0.612705610231082 2014 0.59766367649959 2015 0.583476548769471 2016 0.570797212373253 2017 0.559851035862692 2018 0.552221914602372 2019 0.550142823409891 2020 0.552432802843256 2021 0.549478282619415 2022 0.543428328627649 2023 0.549136712767799