Year % of female population 1960 1.50878126518928 1961 1.50178491262184 1962 1.48043472846929 1963 1.4541356276973 1964 1.43856140454149 1965 1.43803164223768 1966 1.4493585770261 1967 1.47229515783621 1968 1.50235362026189 1969 1.53026894479902 1970 1.55254262641456 1971 1.57049274599966 1972 1.58446124126937 1973 1.59601360062041 1974 1.60725768543762 1975 1.61890594524229 1976 1.62979829271467 1977 1.63930437279345 1978 1.64689248150355 1979 1.65140801788969 1980 1.65270234119264 1981 1.65147203058945 1982 1.64850238810824 1983 1.64459285164196 1984 1.64017047866586 1985 1.63612335799841 1986 1.63292737550296 1987 1.63039190924632 1988 1.62951829011208 1989 1.63162075287483 1990 1.63638473600624 1991 1.6436573179855 1992 1.65385002778862 1993 1.66558034278125 1994 1.67650234429309 1995 1.68562360402823 1996 1.6942239957088 1997 1.70330719861105 1998 1.71281117177129 1999 1.72344837748699 2000 1.7350573742777 2001 1.74679327525184 2002 1.75894252889574 2003 1.77172459906125 2004 1.78479856953744 2005 1.79631332271063 2006 1.80237229709261 2007 1.7965644030989 2008 1.76460979174817 2009 1.7105185091678 2010 1.65992317301728 2011 1.62049082025666 2012 1.59094821188413 2013 1.58150636079111 2014 1.58910158087451 2015 1.59528742226459 2016 1.59598812728894 2017 1.59560460561961 2018 1.59477364168341 2019 1.59405717613301 2020 1.58994855298253 2021 1.58208802654733 2022 1.57397133715436 2023 1.56753312843319