Year % of total population 1960 50.028934374892536 1961 50.02935075842846 1962 50.02383913924273 1963 50.012816600614826 1964 50.00225110227866 1965 49.99551979363942 1966 49.9910748010191 1967 49.987493629659006 1968 49.98119240127182 1969 49.97136982897274 1970 49.96069062912382 1971 49.95070744745159 1972 49.93738744894699 1973 49.92136433539341 1974 49.906565787138625 1975 49.89553941338492 1976 49.88945683529526 1977 49.88420306117207 1978 49.879426530069274 1979 49.87660904595056 1980 49.869936951132594 1981 49.86111711829016 1982 49.856405045433156 1983 49.85455438526035 1984 49.853758868083894 1985 49.85299588145455 1986 49.84753244223255 1987 49.837124011805045 1988 49.827093439895485 1989 49.81583179130231 1990 49.80367578443162 1991 49.79229886695516 1992 49.78288099898021 1993 49.77659589504787 1994 49.77033773465521 1995 49.76459198000001 1996 49.759285638739065 1997 49.751986919392934 1998 49.74415968688059 1999 49.73687115132405 2000 49.72851915117581 2001 49.72230475908698 2002 49.718965556131494 2003 49.71603054609035 2004 49.71337035637191 2005 49.71026014376539 2006 49.70568825097621 2007 49.69983108542384 2008 49.69482334942909 2009 49.6918525297498 2010 49.690673935531926 2011 49.68836578671712 2012 49.68452393970682 2013 49.68143048664937 2014 49.678693832688666 2015 49.67598313972102 2016 49.67648448532634 2017 49.68023547929746 2018 49.685181960168386 2019 49.6924174911969 2020 49.70578707066429 2021 49.72268216073337 2022 49.73536305933905 2023 49.7474716695781