Year % of total population 1960 50.74427197248 1961 50.6742620403936 1962 50.607982548275 1963 50.5415517920441 1964 50.4799201412885 1965 50.4266147743432 1966 50.4005291394135 1967 50.4000727404983 1968 50.3936156797752 1969 50.4190043320787 1970 50.4744328568693 1971 50.5304518664047 1972 50.5905445760494 1973 50.6534869137595 1974 50.6439387724968 1975 50.569427276473 1976 50.4941137456475 1977 50.4190736968645 1978 50.3523080803834 1979 50.3237139272271 1980 50.3346323976781 1981 50.3547474747475 1982 50.3787096876638 1983 50.4000249528236 1984 50.4132357892804 1985 50.4107453378905 1986 50.4218791199133 1987 50.4560661081406 1988 50.48828125 1989 50.5269894874448 1990 50.6003407699271 1991 50.6408917663029 1992 50.6283616384899 1993 50.6188916844727 1994 50.6154689524569 1995 50.6081172297836 1996 50.6338130191231 1997 50.6903259477155 1998 50.7406328302546 1999 50.79334165817 2000 50.8240830387499 2001 50.8753907501298 2002 50.9231601731602 2003 50.9278700345698 2004 50.9384353175923 2005 50.9728617415753 2006 51.0036669564262 2007 51.011784544795 2008 51.022449647 2009 51.0387184422054 2010 51.0727348488356 2011 51.1153989678805 2012 51.1593112222043 2013 51.2095030491303 2014 51.2614688872462 2015 51.3028353055087 2016 51.3327651818788 2017 51.3608946345192 2018 51.3818797490614 2019 51.3928574303169 2020 51.3731288993619 2021 51.329205270264 2022 51.2748415020727 2023 51.2084784481144