Year % of total population 1960 48.82631308586417 1961 48.82615926752635 1962 48.82634206119259 1963 48.82573419584735 1964 48.82535775235324 1965 48.825343681313505 1966 48.82596655665924 1967 48.8277191168498 1968 48.8302530654316 1969 48.832541416224124 1970 48.831874108248314 1971 48.842460566611905 1972 48.852024979157235 1973 48.84706564264147 1974 48.8419355450673 1975 48.84423155650502 1976 48.85366861810594 1977 48.86302597061406 1978 48.874901103325016 1979 48.89208732926575 1980 48.902118499419316 1981 48.90671787325409 1982 48.915579438912 1983 48.92422653130965 1984 48.93293902178773 1985 48.94163671883149 1986 48.95039505140001 1987 48.95928100718076 1988 48.969276881365815 1989 48.97835941431716 1990 48.984845512280145 1991 48.98884304330902 1992 48.99137406342899 1993 48.991001847724945 1994 48.98806809525916 1995 48.98535471934235 1996 48.98422021836371 1997 48.98351592206003 1998 48.982776176244485 1999 48.982723783995816 2000 48.98271007770355 2001 48.983609977942386 2002 48.986410367260234 2003 48.99102530344868 2004 48.9978995503619 2005 49.00684157106397 2006 49.0187850654771 2007 49.03276484974147 2008 49.04918292239892 2009 49.067073376688306 2010 49.082355270432274 2011 49.09518445082863 2012 49.10760179323667 2013 49.11931083887317 2014 49.12917738952608 2015 49.14328300076529 2016 49.16172747507975 2017 49.178043279819605 2018 49.1932806079321 2019 49.208893172858176 2020 49.22374606723668 2021 49.239029016754124 2022 49.255319946162906 2023 49.26925903279876