Year % of total population 1960 50.2660707311142 1961 50.2360788761941 1962 50.2038976587651 1963 50.1668436921139 1964 50.1312061149596 1965 50.1042253107749 1966 50.0795435406879 1967 50.0541159657861 1968 50.032039186211 1969 50.0116038246123 1970 49.9934779162039 1971 49.9771042322316 1972 49.9532662150168 1973 49.9265413653023 1974 49.9102957076288 1975 49.8991543894181 1976 49.8872221403147 1977 49.8751898497164 1978 49.8607079276708 1979 49.8468861182497 1980 49.8346531438832 1981 49.8233099863348 1982 49.8109407246705 1983 49.7931326087986 1984 49.7710194753633 1985 49.7536911843494 1986 49.7454872754825 1987 49.7455317419064 1988 49.7478052410405 1989 49.7451712171707 1990 49.7395612397575 1991 49.7342674667977 1992 49.7324430027883 1993 49.7320548240347 1994 49.7291683701983 1995 49.7232949678972 1996 49.7157021769311 1997 49.7074437537143 1998 49.7006683184921 1999 49.6944797880395 2000 49.6857404138759 2001 49.675224997098 2002 49.6644086610054 2003 49.6549491547824 2004 49.6458164538494 2005 49.6368385127185 2006 49.6326534360398 2007 49.6315670334608 2008 49.6291261835246 2009 49.6261936132273 2010 49.623045228574 2011 49.6216192169213 2012 49.6211373106011 2013 49.6184878004903 2014 49.6155109133726 2015 49.6132427508617 2016 49.612890022102 2017 49.6194070994177 2018 49.628772100559 2019 49.6358173553539 2020 49.6362727758588 2021 49.6328460245386 2022 49.6310116037593 2023 49.6290243453888