Year % of total population 1960 51.4413270397049 1961 51.396935375064 1962 51.3587689386696 1963 51.3235574809296 1964 51.2925898272202 1965 51.2696442471546 1966 51.2512328490226 1967 51.2360160051138 1968 51.227476876308 1969 51.2238734367675 1970 51.2194121079855 1971 51.2669423213272 1972 51.3683286707794 1973 51.4708229337991 1974 51.5720579871848 1975 51.6705183485364 1976 51.7361567870301 1977 51.7799389854673 1978 51.8308722464176 1979 51.8111704721061 1980 51.7635512227112 1981 51.756697547505 1982 51.7496036084823 1983 51.7411190038202 1984 51.7386071705589 1985 51.7471013930763 1986 51.7655180870779 1987 51.7836021393081 1988 51.7877011011519 1989 51.734941212568 1990 51.6617700522896 1991 51.6164031102122 1992 51.7616598429735 1993 52.0465535877344 1994 52.2638410558337 1995 52.4045513668968 1996 52.478858091399 1997 52.5495977585255 1998 52.6186604125843 1999 52.6947346094703 2000 52.7763566810151 2001 52.8568049935959 2002 52.9523158661233 2003 53.0617340152822 2004 53.1617926474642 2005 53.264849638001 2006 53.3810828796168 2007 53.5016557421083 2008 53.6234074909307 2009 53.7479050675101 2010 53.8718654254685 2011 53.9917022194788 2012 54.0943810108423 2013 54.1876724391971 2014 54.284394431699 2015 54.3829541842461 2016 54.4855862253061 2017 54.591200393559 2018 54.6988126803022 2019 54.8051089802815 2020 54.893520406272 2021 54.9799102392211 2022 55.040714354305 2023 55.035871517691