Year % of total population 1960 56.6916657378083 1961 55.492574409146 1962 54.33455258245 1963 53.3061309848846 1964 52.3637317178993 1965 51.4157163673398 1966 50.5276878496688 1967 49.7641038994423 1968 49.1974800177665 1969 48.9351265208374 1970 48.8806724273783 1971 48.8617098753484 1972 48.8843412566985 1973 48.9656876500428 1974 49.1105274263138 1975 49.3398192020349 1976 49.6598127834008 1977 50.0737353387819 1978 50.5705292759062 1979 51.0913162886558 1980 51.57432058335 1981 52.0025344680176 1982 52.3951942898097 1983 52.7584625138126 1984 53.0796323248125 1985 53.3511638403776 1986 53.5816828365937 1987 53.8059704630444 1988 54.0649136283611 1989 54.3993857106045 1990 54.8064640449183 1991 55.2536241353426 1992 55.7513804533749 1993 56.3109071156095 1994 56.9213783730294 1995 57.5563111460227 1996 58.1982517851893 1997 58.8653865410683 1998 59.598814792517 1999 60.4136525306389 2000 61.3710967390792 2001 62.4303112390555 2002 63.482878637707 2003 64.5286312661847 2004 65.53723104759 2005 66.4525613899357 2006 67.2080145914254 2007 67.7398246805107 2008 68.0385931441643 2009 68.1259228357013 2010 68.1024562260409 2011 68.0831287155775 2012 67.9964610440887 2013 67.7531458320263 2014 67.3767858696148 2015 66.8744414576818 2016 66.2835905411175 2017 65.6186900027923 2018 64.8790720327586 2019 64.1288077589937 2020 63.5377094314938 2021 63.150100103576 2022 62.9242112238646 2023 62.9008285524606