Year % of female population 1960 4.10838313321958 1961 4.18769686712095 1962 4.30835697398514 1963 4.45603764667293 1964 4.60801250581722 1965 4.75563893932725 1966 4.89668780574832 1967 5.0291894188753 1968 5.15967438294399 1969 5.29919675762376 1970 5.45528135146495 1971 5.62914886064628 1972 5.82242653867137 1973 6.03082318770843 1974 6.24784627209839 1975 6.46792716707523 1976 6.68364000669185 1977 6.89252659323271 1978 7.08223126285285 1979 7.23116543273669 1980 7.33687452661567 1981 7.39679233921169 1982 7.41343604777371 1983 7.41726883616908 1984 7.44046147638633 1985 7.49312882217394 1986 7.60361002362978 1987 7.78835539760464 1988 8.03033649101463 1989 8.31501998463537 1990 8.64885144796716 1991 9.02490220104859 1992 9.70564376075319 1993 10.5871804161124 1994 11.3735993644576 1995 11.8957895001638 1996 11.9875085683616 1997 12.1224155482659 1998 12.4239014787294 1999 12.8349981011683 2000 13.2873681024125 2001 13.7533209957681 2002 14.2098872829278 2003 14.6943415309037 2004 15.2613289703851 2005 15.7751044705351 2006 16.1756756204078 2007 16.4069683634196 2008 16.4579419538653 2009 16.4621912443783 2010 16.4494981749137 2011 16.4590053959762 2012 16.5578252005789 2013 16.7897468019504 2014 17.0829597603729 2015 17.4015988049393 2016 17.7783806228686 2017 18.230409291303 2018 18.7629289103225 2019 19.3224476534613 2020 19.8472252133276 2021 20.277063335773 2022 20.5762275672507 2023 20.8820674798182