Year % of female population 1960 18.3821125454034 1961 18.6182711139222 1962 18.7816557433862 1963 18.9214646085787 1964 19.0490937091624 1965 19.1776927929765 1966 19.3147467593738 1967 19.4616946183409 1968 19.6087322666321 1969 19.7215105299728 1970 19.7667392678985 1971 19.6951150654603 1972 19.5098167850568 1973 19.3019890447596 1974 19.1324745813119 1975 19.0173525068496 1976 18.9659897706613 1977 18.954254664333 1978 18.9540253039025 1979 18.9640432179879 1980 18.9819398700093 1981 19.0145972141322 1982 19.0644099644693 1983 19.1191489434804 1984 19.1837545141288 1985 19.2643974574288 1986 19.3490559052985 1987 19.4090661013133 1988 19.4324562859289 1989 19.4218423501874 1990 19.3717325550371 1991 19.3063076745755 1992 19.2097721339197 1993 19.0811743239248 1994 18.9533485016664 1995 18.8249169307769 1996 18.6986411854768 1997 18.5815420125528 1998 18.4664110326683 1999 18.3636197505703 2000 18.28719313339 2001 18.2375676297332 2002 18.2170018573435 2003 18.2297396058283 2004 18.2692440665394 2005 18.3210483914607 2006 18.3719192808273 2007 18.4102153877039 2008 18.437981547354 2009 18.4499879825469 2010 18.4331595074699 2011 18.3848107644604 2012 18.3148160727538 2013 18.2273514833975 2014 18.1199271385907 2015 17.99251705328 2016 17.8436364691715 2017 17.676170697889 2018 17.4994477364047 2019 17.3206213620273 2020 17.1572603720202 2021 17.0074172246524 2022 16.8500019210232 2023 16.6785529722867