Year % of female population 1960 17.4493752329083 1961 17.5539843794102 1962 17.6565637002728 1963 17.7587780614375 1964 17.8603512079407 1965 17.9573104352917 1966 18.0511152488811 1967 18.1451828120936 1968 18.2366910785806 1969 18.3239741082864 1970 18.4052673808222 1971 18.4809279126674 1972 18.5499931848471 1973 18.6134821399522 1974 18.6757347116955 1975 18.7370004176006 1976 18.7941952261532 1977 18.8521891105496 1978 18.9006861833231 1979 18.9216052755549 1980 18.9245926578691 1981 18.9203137977764 1982 18.8878256868736 1983 18.842613149468 1984 18.7725516520956 1985 18.6925182354293 1986 18.704492735449 1987 18.805643697903 1988 18.9614693197969 1989 19.1603152958056 1990 19.3601162948813 1991 19.5454103364399 1992 19.7084942896664 1993 19.8705479149712 1994 20.049309148105 1995 20.2159109549488 1996 20.3466023490351 1997 20.4201440324754 1998 20.4276258297857 1999 20.3761194851171 2000 20.2758487473864 2001 20.1341986850831 2002 19.9722419537089 2003 19.7972695978101 2004 19.5889212266884 2005 19.274757814091 2006 18.9561454984632 2007 18.9560393007135 2008 18.7909025635129 2009 18.3375554649199 2010 18.0206669942818 2011 17.59531407936 2012 17.1663534180776 2013 16.9827074840763 2014 16.8676870809082 2015 16.8105623207598 2016 16.8090286690953 2017 16.7094178381016 2018 16.5524672971651 2019 16.377473859205 2020 16.1577842865612 2021 15.9867149643126 2022 15.8714138250099 2023 15.7242710248999