Year % of total population 1960 51.5491862205513 1961 51.5019385418944 1962 51.4539054793292 1963 51.4152430868936 1964 51.4087318262039 1965 51.4208403429475 1966 51.4328174343231 1967 51.4486532383603 1968 51.4686065991696 1969 51.491612699138 1970 51.5247135065442 1971 51.5699217086514 1972 51.6997872794705 1973 51.9074287722622 1974 52.1112088009516 1975 52.308110388821 1976 52.5000692731857 1977 52.7055775903145 1978 52.765293180266 1979 52.6730700100276 1980 52.5878563001632 1981 52.506927503967 1982 52.4305535639515 1983 52.3804470459445 1984 52.3560438120407 1985 52.3382272974443 1986 52.3210680763387 1987 52.3067623034096 1988 52.2945375235451 1989 52.2643546286749 1990 52.2158899800558 1991 52.1666883273612 1992 52.1184221909562 1993 52.0709477279026 1994 52.024753823315 1995 51.9805915850782 1996 51.9395039734001 1997 51.8779598052176 1998 51.8016979438575 1999 51.7297960870428 2000 51.656059331997 2001 51.585381632549 2002 51.5229396033758 2003 51.4802050362309 2004 51.4539628348532 2005 51.4288349442928 2006 51.3988672285659 2007 51.3498551287305 2008 51.2927808153751 2009 51.2390048284877 2010 51.1836300336871 2011 51.1285997230645 2012 51.073681712866 2013 51.0113459615598 2014 50.9467939407948 2015 50.8857488510455 2016 50.8245866846539 2017 50.7706887798274 2018 50.7247837745207 2019 50.6808088963923 2020 50.6332803391627 2021 50.5795442584991 2022 50.5401937449189 2023 50.5196327281204