Year % of total population 1960 49.38313090336811 1961 49.41251369985932 1962 49.431548758081576 1963 49.44105337533157 1964 49.44944265197938 1965 49.46189697907009 1966 49.47311786263826 1967 49.47970917846784 1968 49.483391169235965 1969 49.48465673201352 1970 49.482925066236305 1971 49.47814176968525 1972 49.47148435752334 1973 49.465751567944345 1974 49.461777045408944 1975 49.46463024908249 1976 49.4718949359508 1977 49.47826927142219 1978 49.48457234053256 1979 49.49312600846676 1980 49.50038725596568 1981 49.50312028478186 1982 49.503831402708194 1983 49.50443610824981 1984 49.50470728005599 1985 49.50255676254296 1986 49.497507719251466 1987 49.48954675404599 1988 49.480140771240336 1989 49.46893911750796 1990 49.455880417226425 1991 49.443195487073325 1992 49.431363299145595 1993 49.421523107860544 1994 49.412864672438616 1995 49.40433602928505 1996 49.396402078030526 1997 49.389249732030976 1998 49.38427424296 1999 49.37944361619688 2000 49.37151412083485 2001 49.36563040699461 2002 49.363320452520334 2003 49.36171573150143 2004 49.36020802232827 2005 49.35815467197027 2006 49.35559902632815 2007 49.3531112419462 2008 49.35112309983844 2009 49.35049010620018 2010 49.351848624696835 2011 49.3520032741245 2012 49.35064478913424 2013 49.35060774877134 2014 49.35244545108422 2015 49.35614698305378 2016 49.362559643819466 2017 49.3729268262153 2018 49.38641822625772 2019 49.40058575188593 2020 49.41813490189545 2021 49.439861944222656 2022 49.46028630170541 2023 49.47923734651751