Year % of female population 1960 2.75914612170578 1961 2.73755742086752 1962 2.72557440058886 1963 2.71900231154222 1964 2.71275930850616 1965 2.7049361779384 1966 2.69624484795225 1967 2.68587485591635 1968 2.67613281888551 1969 2.67068142720525 1970 2.66934415048004 1971 2.67135571869835 1972 2.67647107017586 1973 2.68191501018585 1974 2.68324715334363 1975 2.67905813104381 1976 2.67129980547699 1977 2.66022285944672 1978 2.64616432799587 1979 2.63067680247322 1980 2.61461080192467 1981 2.59904750329145 1982 2.58448702474269 1983 2.571155939238 1984 2.55936766807784 1985 2.54960300631331 1986 2.54208010417462 1987 2.53655283866663 1988 2.53266559667569 1989 2.5295312227803 1990 2.52658486762583 1991 2.52523980513174 1992 2.52627340566465 1993 2.52806384418188 1994 2.52770677283974 1995 2.52470815053303 1996 2.52003043496163 1997 2.51396540259613 1998 2.50820443338361 1999 2.50421628830998 2000 2.50124730756515 2001 2.49624190649545 2002 2.48469132115489 2003 2.45910108830663 2004 2.41160252562268 2005 2.37007818321383 2006 2.34844991976031 2007 2.33193995093747 2008 2.32611862343761 2009 2.33799183140645 2010 2.34597512264823 2011 2.34063458647045 2012 2.33614177944283 2013 2.33259453295801 2014 2.3295052927889 2015 2.32750059447146 2016 2.32671852376793 2017 2.32735186953231 2018 2.32918719762435 2019 2.33171967197275 2020 2.33320216713457 2021 2.3324462172663 2022 2.33288626491568 2023 2.33675865668021