Year % of female population 1960 2.36262376194982 1961 2.41406225734923 1962 2.47141372413268 1963 2.53210302496287 1964 2.59242848021782 1965 2.65033900273728 1966 2.70723056407752 1967 2.76331445670703 1968 2.81675295959852 1969 2.86525385570942 1970 2.91037642924287 1971 2.95015369816317 1972 2.98268195995693 1973 3.01350239243119 1974 3.04771987555982 1975 3.08895998910233 1976 3.13840542656906 1977 3.19564547216555 1978 3.25383092488368 1979 3.30079781105826 1980 3.33446196578943 1981 3.35535995910639 1982 3.36133401109649 1983 3.35947594307355 1984 3.36309649750133 1985 3.37659705297378 1986 3.39878647542631 1987 3.42999346833618 1988 3.4670121868983 1989 3.50407836453024 1990 3.53681677982587 1991 3.56859216231091 1992 3.59955823898208 1993 3.62233585099087 1994 3.62920338408833 1995 3.61887624906544 1996 3.59170932215779 1997 3.54811569361057 1998 3.49639294873308 1999 3.44840855567744 2000 3.41073999463971 2001 3.38380991082585 2002 3.36895375100507 2003 3.36389297254597 2004 3.36696552391025 2005 3.37920521358947 2006 3.4013960162653 2007 3.43418728708206 2008 3.4769608968262 2009 3.52746192113821 2010 3.58275601577914 2011 3.64022845501394 2012 3.69783856905369 2013 3.74930724324689 2014 3.78523081872353 2015 3.81077427350445 2016 3.83372974691752 2017 3.85385365027096 2018 3.8767630542879 2019 3.90816943053229 2020 3.93709177706587 2021 3.95732863848482 2022 3.98059139237712 2023 4.00455892034589