Year % of total population 1960 50.4617890988195 1961 50.4318973891185 1962 50.4026241113938 1963 50.3750726991408 1964 50.3488905238689 1965 50.323781276505 1966 50.2989352536501 1967 50.2747338515813 1968 50.2527941779243 1969 50.2332774936813 1970 50.2163611056159 1971 50.2029210601188 1972 50.1922147164287 1973 50.1833205959467 1974 50.1755840145782 1975 50.1686071330952 1976 50.160926771238 1977 50.1511225783286 1978 50.140597811485 1979 50.13002950433 1980 50.1199978230483 1981 50.1108148743916 1982 50.1033577504548 1983 50.0969725020849 1984 50.0897872528639 1985 50.0816313675187 1986 50.0721631537996 1987 50.061747336167 1988 50.0507648305452 1989 50.0406129797856 1990 50.0292867443958 1991 50.01476066906 1992 49.9983935009897 1993 49.981135988957 1994 49.9647761243025 1995 49.9508263731961 1996 49.9388179261006 1997 49.9291947197536 1998 49.9229759172806 1999 49.9175192350181 2000 49.9108535315174 2001 49.9631221841516 2002 50.0648721711676 2003 50.1571795905146 2004 50.2458277831041 2005 50.3292103201477 2006 50.4049520499775 2007 50.4717286272938 2008 50.594710849723 2009 50.7699354966087 2010 50.9303659260919 2011 51.0732357446934 2012 51.1981888351655 2013 51.2412238552439 2014 51.2113945400338 2015 51.1814850667221 2016 51.1521783661452 2017 51.123205084597 2018 51.0947589067116 2019 51.0674295579068 2020 51.0421899771574 2021 51.0162137424826 2022 50.9890229150791 2023 50.9619289700223