Year % of total population 1960 50.4413527322996 1961 50.4407455895619 1962 50.4448478221291 1963 50.4503531704371 1964 50.4558717310037 1965 50.4612834596034 1966 50.4608686035917 1967 50.4512068995416 1968 50.438479526454 1969 50.4210721540254 1970 50.3973694889073 1971 50.365813402526 1972 50.3301361534664 1973 50.2932104652123 1974 50.257002475114 1975 50.2252293608266 1976 50.1918330956227 1977 50.1688823687773 1978 50.1599239534435 1979 50.1558577739055 1980 50.1622224971265 1981 50.1773636020993 1982 50.1965787800193 1983 50.222638522277 1984 50.2535446149999 1985 50.2830221127682 1986 50.3076745040814 1987 50.3318946296553 1988 50.3602294621839 1989 50.3923019687876 1990 50.4251447575559 1991 50.4488506532354 1992 50.4687514950622 1993 50.4928660100159 1994 50.5172698028272 1995 50.5371179798783 1996 50.5556141486348 1997 50.5763121586546 1998 50.5973474480492 1999 50.6175347568437 2000 50.632761419141 2001 50.6437722290533 2002 50.658619091959 2003 50.6719466534125 2004 50.6774355761591 2005 50.6755496753664 2006 50.6672977825656 2007 50.658302962627 2008 50.6484667030506 2009 50.6378786116627 2010 50.6298249883358 2011 50.6379906451626 2012 50.6458840108243 2013 50.638664034923 2014 50.6305642281487 2015 50.6249178871976 2016 50.6190519665321 2017 50.6099142792747 2018 50.5980064827939 2019 50.5870822782839 2020 50.5814295081045 2021 50.5758607521077 2022 50.5672041767544 2023 50.5583720686815