Year % of female population 1960 3.20055818454977 1961 3.26509443958042 1962 3.1958163858222 1963 3.13815676767257 1964 3.06136764470098 1965 2.94029417456938 1966 2.851383835455 1967 2.82065674992983 1968 2.78314310798946 1969 2.76396813136637 1970 2.75201092477559 1971 2.7818007022582 1972 2.84031852646312 1973 2.882568038152 1974 2.92677859042553 1975 2.99196820540109 1976 3.09675649158983 1977 3.25021410338491 1978 3.44291204312166 1979 3.65174034103442 1980 3.84439321176206 1981 3.89260262316007 1982 3.77913046904241 1983 3.63756488909863 1984 3.51830167403938 1985 3.43264853205015 1986 3.37775750484237 1987 3.35244984287367 1988 3.3302867242496 1989 3.27778970392847 1990 3.2005325400937 1991 3.10461464121769 1992 2.99645297584894 1993 2.89671164112169 1994 2.80432999917747 1995 2.70340848631578 1996 2.59614142680144 1997 2.49192237028277 1998 2.39091011735645 1999 2.28552403299526 2000 2.18448441086671 2001 2.09703236090766 2002 2.0321363078725 2003 2.01098677348714 2004 2.0583973761799 2005 2.20986760853661 2006 2.44922261639694 2007 2.72888275759214 2008 3.04435868331442 2009 3.38782689945884 2010 3.74732057094473 2011 4.09192617641616 2012 4.36654923146035 2013 4.6223607811024 2014 4.91322496126749 2015 5.18946602918195 2016 5.4501277764473 2017 5.70079404076046 2018 5.87871907763822 2019 5.98028443250137 2020 6.088342237639 2021 6.30323258884336 2022 6.6045508255011 2023 6.90490886888395