Year % of total population 1960 50.0929919514093 1961 50.0992676295919 1962 50.1047348504956 1963 50.1108778038323 1964 50.1156635373984 1965 50.1175326034083 1966 50.1201342007533 1967 50.1237754092183 1968 50.1247249330184 1969 50.124464172762 1970 50.1247869089527 1971 50.1253826219947 1972 50.1280875781895 1973 50.1299315530385 1974 50.1295680388664 1975 50.1318634196446 1976 50.1348598761367 1977 50.1354129119312 1978 50.1359660799871 1979 50.1365389121656 1980 50.1358058848231 1981 50.1369213304518 1982 50.1381848777751 1983 50.1384164333473 1984 50.1380564813371 1985 50.1375124657615 1986 50.1353788451824 1987 50.1314290671836 1988 50.1274767310199 1989 50.1228594930708 1990 50.1190150423871 1991 50.1144589231414 1992 50.1093862567348 1993 50.1024401517918 1994 50.0922370490626 1995 50.0810350962563 1996 50.0675707589616 1997 50.0511347595697 1998 50.0329149948496 1999 50.0141291493053 2000 49.9976173918711 2001 49.9816863373557 2002 49.9665814906682 2003 49.9518916566308 2004 49.9379616305951 2005 49.9259447003614 2006 49.9167219018923 2007 49.9105564634115 2008 49.9219630594913 2009 49.9323626756055 2010 49.9247777752492 2011 49.9157839089207 2012 49.9048840574386 2013 49.8942847754874 2014 49.8831189489375 2015 49.8707490367532 2016 49.8580089330703 2017 49.8452016291739 2018 49.8315479124735 2019 49.8175063855326 2020 49.8026643781228 2021 49.7836893224673 2022 49.7654325804764 2023 49.75075944982