Year % of female population 1960 0.180502882902262 1961 0.180117737721214 1962 0.180281790207058 1963 0.181398844230221 1964 0.182212836348522 1965 0.182300163132137 1966 0.18290872379595 1967 0.184372155195262 1968 0.185861144219309 1969 0.188800485177537 1970 0.193401274419971 1971 0.198508812639524 1972 0.202753909902462 1973 0.205862637519736 1974 0.209771281634863 1975 0.214088130465724 1976 0.217301085929034 1977 0.220333735883999 1978 0.224536556008647 1979 0.228538295182674 1980 0.232390537482141 1981 0.236590742101396 1982 0.241112535004034 1983 0.246345076318671 1984 0.251764469767079 1985 0.256505640528756 1986 0.261646632270031 1987 0.267554987233107 1988 0.273414718529136 1989 0.279802736190381 1990 0.287884367691896 1991 0.295652621024758 1992 0.303021634867511 1993 0.312408298682296 1994 0.322337083307601 1995 0.332294503377017 1996 0.342748309391072 1997 0.354502541894895 1998 0.366408473056727 1999 0.39412839504379 2000 0.441586227485322 2001 0.498540919507828 2002 0.565164450235172 2003 0.64048200912967 2004 0.72468051013305 2005 0.786885563434275 2006 0.805838310491967 2007 0.812866406285581 2008 0.829054923919282 2009 0.85480958760074 2010 0.891672070739822 2011 0.940518708502121 2012 0.999266661234528 2013 1.06561941326456 2014 1.13807909997781 2015 1.21621543977385 2016 1.29867540804324 2017 1.3184412417227 2018 1.27788019593417 2019 1.2439088012965 2020 1.2186775764703 2021 1.20278389800393 2022 1.19679804626552 2023 1.19872261962646