Year % of female population 1960 19.2093414988129 1961 19.0530654859239 1962 18.846096269737 1963 18.5926600648253 1964 18.3271578182022 1965 18.0785259546762 1966 17.8385931449921 1967 17.59563930101 1968 17.3512811843613 1969 17.1051832263636 1970 16.8532997775988 1971 16.5943529426718 1972 16.3376977737754 1973 16.0973347565216 1974 15.881627130469 1975 15.6954741022387 1976 15.5440056727414 1977 15.4190980271199 1978 15.3020619740891 1979 15.1859522216925 1980 15.0650546133179 1981 14.9253817505217 1982 14.7615357767319 1983 14.5799517713822 1984 14.3893345919281 1985 14.1985306598042 1986 14.0311024136092 1987 13.8929393048788 1988 13.7636626154665 1989 13.6271760961566 1990 13.4731629977289 1991 13.2784935512965 1992 13.0427798567644 1993 12.7895781836584 1994 12.5329344208709 1995 12.2823216316506 1996 12.044986788909 1997 11.8251590666523 1998 11.6217582813142 1999 11.4351110769781 2000 11.2638396990328 2001 11.1054259794312 2002 10.9540124152111 2003 10.8077912850117 2004 10.6672299298659 2005 10.5342808582641 2006 10.4128917750416 2007 10.2985601533788 2008 10.1883338698303 2009 10.0761671971044 2010 9.9524950593632 2011 9.81673747075662 2012 9.67198355417188 2013 9.52147847806101 2014 9.3703110065863 2015 9.22239846957804 2016 9.08915177713516 2017 8.9882720776043 2018 8.90468955616501 2019 8.75401548212504 2020 8.49118023935127 2021 8.18265434688505 2022 7.85281746735245 2023 7.5691427207075