Year % of total population 1960 51.1210600998074 1961 51.11866860538307 1962 51.11714452004843 1963 51.11626090011614 1964 51.11559755347486 1965 51.11074574773089 1966 51.10380223571386 1967 51.099249322521466 1968 51.09449013122439 1969 51.090283841245245 1970 51.09021225380833 1971 51.08354943945219 1972 51.08094149654525 1973 51.090537885588965 1974 51.10001694116133 1975 51.10396278048234 1976 51.09718989821858 1977 51.089104351051205 1978 51.08179166383616 1979 51.07227149012918 1980 51.070519838821795 1981 51.07077725807836 1982 51.05966757293493 1983 51.040166087880685 1984 51.01901260474279 1985 50.994941199736054 1986 50.97819295162152 1987 50.97186492208109 1988 50.96550454600111 1989 50.96089962490889 1990 50.95783778905344 1991 50.95690577871437 1992 50.95426373105611 1993 50.94922094589626 1994 50.94542420367714 1995 50.94208565323188 1996 50.939670874929945 1997 50.94183289314167 1998 50.945892159678834 1999 50.948121859690126 2000 50.949687907287675 2001 50.95071580213747 2002 50.950613563073354 2003 50.949807229724335 2004 50.94814784557065 2005 50.94566815713872 2006 50.94100364774567 2007 50.933730081664 2008 50.92344274421972 2009 50.91163509160722 2010 50.901391311906956 2011 50.89195735173474 2012 50.88241500852056 2013 50.87266399212144 2014 50.86444097809319 2015 50.85533281506242 2016 50.84192437618281 2017 50.8277602206865 2018 50.81468393551338 2019 50.80098820074993 2020 50.782823750394336 2021 50.76116723699223 2022 50.741754219564605 2023 50.72613221662325