Year % of total population 1960 50.8771602917154 1961 50.8530950215018 1962 50.8292728596518 1963 50.8062730941475 1964 50.7846485263803 1965 50.7641794780231 1966 50.7463371794245 1967 50.7316659382117 1968 50.7198787925334 1969 50.7106342416543 1970 50.7022216242313 1971 50.6928480532009 1972 50.6828083057643 1973 50.672363322766 1974 50.6609782122654 1975 50.6491530230403 1976 50.6368332980146 1977 50.6238666568668 1978 50.6103154639849 1979 50.5959261727344 1980 50.5813273159198 1981 50.5665241536584 1982 50.5515189145503 1983 50.5364072129651 1984 50.5207496634579 1985 50.5038767628632 1986 50.4860344643429 1987 50.467062302398 1988 50.4467333753297 1989 50.4191099983949 1990 50.3908214311371 1991 50.3685786500957 1992 50.3474813085905 1993 50.3284181508795 1994 50.3115858847931 1995 50.2968446654666 1996 50.2838787331244 1997 50.2721719156207 1998 50.2612837964534 1999 50.2511960096768 2000 50.2415772765781 2001 50.2326345693467 2002 50.2246082172644 2003 50.216934330062 2004 50.2093077105464 2005 50.2012179554659 2006 50.191876500821 2007 50.1807021419076 2008 50.1675690274531 2009 50.1530760030713 2010 50.1382734433578 2011 50.124001199347 2012 50.1113223335505 2013 50.1007181368008 2014 50.0918408359612 2015 50.0841399216952 2016 50.0772414423436 2017 50.0702015569585 2018 50.0620730303427 2019 50.052805271171 2020 50.0389344624948 2021 50.0204423217422 2022 50.0027106227605 2023 49.9894473854247