Year % of total population 1960 50.51826588066952 1961 50.53052899818546 1962 50.55257053454996 1963 50.57579046251688 1964 50.60331884204546 1965 50.63440460796274 1966 50.65063675263159 1967 50.6517308441711 1968 50.65226030352029 1969 50.650877630019124 1970 50.64757907010134 1971 50.64287596206348 1972 50.634695589846146 1973 50.62058050900437 1974 50.60715458902302 1975 50.60051161966336 1976 50.59124961984402 1977 50.586832781353486 1978 50.59235105218864 1979 50.59632766831999 1980 50.595509024857336 1981 50.633973813975636 1982 50.65734281218929 1983 50.63258412993696 1984 50.614804799013584 1985 50.59919816026603 1986 50.57829955368605 1987 50.55572417281639 1988 50.53796019617445 1989 50.52757729838977 1990 50.52598026877385 1991 50.52640127760594 1992 50.52906103179864 1993 50.53436571325046 1994 50.53810470825664 1995 50.53904024076982 1996 50.54624390917272 1997 50.560129745148956 1998 50.565048665838106 1999 50.56125433258069 2000 50.55373313050721 2001 50.54330678657058 2002 50.53573743510543 2003 50.53754711187981 2004 50.544085627486496 2005 50.54749748270716 2006 50.55093998497 2007 50.55183775146493 2008 50.549726723332235 2009 50.549017478329674 2010 50.5499128407011 2011 50.553012985945465 2012 50.550979254159635 2013 50.54819982178888 2014 50.55046912464491 2015 50.54673698121516 2016 50.53577363792791 2017 50.522617802684245 2018 50.50882520640092 2019 50.49541508421599 2020 50.48310033991937 2021 50.47051705378119 2022 50.45662867853901 2023 50.44266839388998