Year % of total population 1960 50.6114218889836 1961 50.5589980781716 1962 50.5360494336106 1963 50.5367196770565 1964 50.5387992117741 1965 50.5351768335178 1966 50.540229508912 1967 50.5591050530214 1968 50.5780324807524 1969 50.6060145331294 1970 50.6362225552951 1971 50.6584528103334 1972 50.6793536188833 1973 50.7005489207847 1974 50.7186136549392 1975 50.7382956387075 1976 50.7544592509269 1977 50.7668776362582 1978 50.7863015852993 1979 50.80985129286 1980 50.8326392076372 1981 50.8614113685988 1982 50.8936649006714 1983 50.9238680034535 1984 50.9571868534387 1985 50.9885125455376 1986 51.016450674159 1987 51.047782673681 1988 51.0841721997784 1989 51.1235400233131 1990 51.1635231183138 1991 51.197751762898 1992 51.2283728148367 1993 51.2553789944454 1994 51.2780842026436 1995 51.3004586731544 1996 51.3202815301676 1997 51.3390754718423 1998 51.3620070149752 1999 51.3891958873372 2000 51.4154991267862 2001 51.4256603234547 2002 51.4227175665454 2003 51.4204811870252 2004 51.4131437222171 2005 51.4028944381596 2006 51.3942388606784 2007 51.3852865043799 2008 51.3762915217603 2009 51.360475167037 2010 51.341406827929 2011 51.3224362723685 2012 51.3008840543192 2013 51.2847803005833 2014 51.2721768096319 2015 51.2526445106632 2016 51.2282085571097 2017 51.206884855491 2018 51.1872870861404 2019 51.1716334881087 2020 51.1668173382318 2021 51.1734661472474 2022 51.1373444591458 2023 51.1087194762423