Year % of female population 1960 4.01517453409467 1961 3.99671320062252 1962 4.03295560513392 1963 4.12553304758467 1964 4.26844098395443 1965 4.44996410806965 1966 4.6546974317963 1967 4.86713697224425 1968 5.07043765857614 1969 5.24971665378922 1970 5.40498431828242 1971 5.54581889009475 1972 5.67840808559577 1973 5.79745231695386 1974 5.89386481828951 1975 6.02629633959485 1976 6.11853329758445 1977 6.15545600509388 1978 6.2349254129733 1979 6.31174672196775 1980 6.24352967866727 1981 5.91169294762355 1982 5.32502094524666 1983 4.55273378610516 1984 3.75929529854715 1985 3.12715998348735 1986 2.77359521741992 1987 2.75032857776309 1988 3.01158831195453 1989 3.41549563490203 1990 3.84903416868755 1991 4.23342606002693 1992 4.52040495020133 1993 4.74222125256385 1994 4.9604075328884 1995 5.22581307104014 1996 5.55117164800044 1997 5.92852736776439 1998 6.36333945459005 1999 6.85959565093618 2000 7.36423660440596 2001 7.79382140821565 2002 8.1132485398858 2003 8.31910479542381 2004 8.37532496964535 2005 8.29476239325212 2006 8.14978345326202 2007 7.97730118598161 2008 7.80287353868046 2009 7.64941182080484 2010 7.5062492284985 2011 7.3429718750839 2012 7.15258197314313 2013 6.9441861768645 2014 6.74217122436289 2015 6.57476409009647 2016 6.46599261481703 2017 6.4362242971874 2018 6.48662750286905 2019 6.59980903793815 2020 6.77315560744881 2021 6.99189320191341 2022 7.22486441170398 2023 7.46414857621164