Year % of total population 1960 49.0081596500234 1961 48.994461343546 1962 48.9853178581175 1963 48.9779474454796 1964 48.9720246058299 1965 48.9666425735334 1966 48.9618814054129 1967 48.9568774435171 1968 48.9499546579653 1969 48.9417645770999 1970 48.9353931137386 1971 48.9302475224735 1972 48.9217753928797 1973 48.9116342755639 1974 48.90306916612 1975 48.8956749830746 1976 48.8874600873768 1977 48.8794469616067 1978 48.8735644944606 1979 48.8691568092029 1980 48.8645522539151 1981 48.8608934624678 1982 48.860854289031 1983 48.8637142209644 1984 48.8647707016691 1985 48.8633104243151 1986 48.865173954003 1987 48.8692727162353 1988 48.8708352847526 1989 48.8733512660043 1990 48.8768379325994 1991 48.8804424120388 1992 48.8837318192914 1993 48.8858132300942 1994 48.8885095134838 1995 48.8894323816135 1996 48.889114332986 1997 48.8909461389568 1998 48.8946991216993 1999 48.8979306000849 2000 48.9009963910988 2001 48.9053573706344 2002 48.9112523813276 2003 48.9204666163585 2004 48.9301572670587 2005 48.9399236168413 2006 48.9513109498983 2007 48.9649273862397 2008 48.9820463224719 2009 49.0014309314497 2010 49.0235243837831 2011 49.0490421325144 2012 49.0769992110516 2013 49.1073475107349 2014 49.1404054658955 2015 49.1785827604395 2016 49.2169100974866 2017 49.2523906870128 2018 49.2899696425631 2019 49.3275657639136 2020 49.3634639214919 2021 49.38969991523 2022 49.4109007174889 2023 49.4353653130974