Year % of female population 1960 26.7859953060639 1961 27.3508679588955 1962 27.7372378475505 1963 27.960627930516 1964 28.0678189200941 1965 28.0584016227705 1966 28.1796264403639 1967 28.4827245149133 1968 28.6999855031176 1969 28.7545714004839 1970 28.4965981078491 1971 28.044628870427 1972 27.5976042173517 1973 27.1328551573892 1974 26.639820534128 1975 26.1266085033922 1976 25.6256010858458 1977 25.1432003007828 1978 24.6885022137745 1979 24.3006702061185 1980 24.0140208733714 1981 23.8180424226936 1982 23.6806525419876 1983 23.5726520775241 1984 23.5092994297843 1985 23.4936283255291 1986 23.4828076491681 1987 23.4651531128092 1988 23.4231273278359 1989 23.3695539544491 1990 23.3829941575262 1991 23.4423830678617 1992 23.4654497309783 1993 23.4473648962986 1994 23.3772428227137 1995 23.232662330117 1996 23.0199258504306 1997 22.7487568819789 1998 22.4050136850092 1999 21.9721409841497 2000 21.460511639653 2001 20.886090214718 2002 20.2665327413959 2003 19.6464191231741 2004 19.0464981276394 2005 18.43786489273 2006 17.8495182875773 2007 17.3862581578938 2008 17.0991464314027 2009 16.9815721779161 2010 16.9517725156127 2011 16.9535689871261 2012 16.9947209325152 2013 17.0836203733236 2014 17.3064639298195 2015 17.6482495757669 2016 18.001788084418 2017 18.3315951871811 2018 18.6325667515307 2019 18.8784012917438 2020 19.0592083014011 2021 19.2313545314695 2022 19.3873416700892 2023 19.4428673069002