Year % of total population 1960 49.5463922931815 1961 49.5447761445224 1962 49.5444325214275 1963 49.5456070816559 1964 49.5465714944643 1965 49.5487211690496 1966 49.5523087347151 1967 49.5563995388229 1968 49.5613054174159 1969 49.5660649606537 1970 49.5727781933222 1971 49.579750150466 1972 49.5849900011134 1973 49.5889629858505 1974 49.5911299745086 1975 49.5893021076662 1976 49.5824296834792 1977 49.5745543154184 1978 49.5668489493219 1979 49.5643710375348 1980 49.5697167492587 1981 49.5779344526027 1982 49.5863465070223 1983 49.5917961640936 1984 49.5963766956977 1985 49.6131866271542 1986 49.6425319131019 1987 49.681007567519 1988 49.7261934585633 1989 49.7624813636277 1990 49.7881712992083 1991 49.8374345656154 1992 49.8901628665046 1993 49.9230791710657 1994 49.955718434797 1995 49.9822640668533 1996 50.0088621876159 1997 50.0429683238647 1998 50.0771764437407 1999 50.102509191376 2000 50.1334104270138 2001 50.174720176777 2002 50.2106679710493 2003 50.2409072015056 2004 50.2683695173025 2005 50.2917712341071 2006 50.3106986292689 2007 50.3242083762799 2008 50.3314948989774 2009 50.333692061439 2010 50.3334859555186 2011 50.3339614641058 2012 50.3333401093135 2013 50.3294485128532 2014 50.3237909487712 2015 50.3166853701691 2016 50.3057414100743 2017 50.2956377639318 2018 50.2863840632398 2019 50.2761429720564 2020 50.2654595798816 2021 50.2509838753142 2022 50.235218981007 2023 50.2230155351749