Year % of total population 1960 49.568148374447 1961 49.5492217686812 1962 49.4442472827056 1963 49.3176169901193 1964 49.1447520050539 1965 48.9561236759825 1966 48.8680084313581 1967 48.8713173450031 1968 48.8724449860606 1969 48.8724570484536 1970 48.8723654792016 1971 48.8724915347125 1972 48.8739761940444 1973 48.8762665380085 1974 48.8817180232132 1975 48.9061598154037 1976 48.9376877668553 1977 48.9595307441401 1978 48.9799516748622 1979 49.0016860809179 1980 49.0251704192103 1981 49.0495731126246 1982 49.0747144413707 1983 49.099388355473 1984 49.1203368495054 1985 49.1381090733458 1986 49.1552100851684 1987 49.1672956034573 1988 49.1704993165455 1989 49.1704114508978 1990 49.1717125673356 1991 49.1754906126735 1992 49.182611696899 1993 49.1905247751114 1994 49.2003688584238 1995 49.2151491420296 1996 49.1575846705534 1997 49.0232114357595 1998 48.9644864230407 1999 48.9792471733502 2000 48.9897763485048 2001 48.9988761572752 2002 49.0054418230613 2003 49.0073070206801 2004 49.0063237411192 2005 49.0045389873801 2006 49.0028975555016 2007 49.0037834761812 2008 49.0055856025145 2009 49.0086312842551 2010 49.0114329559087 2011 49.0137559466391 2012 49.0185078523907 2013 49.024276600075 2014 49.0308323741012 2015 49.0373706659818 2016 49.0415073587367 2017 49.0445478820706 2018 49.0481087762835 2019 49.0534702803638 2020 49.0631751611089 2021 49.0758753531653 2022 49.085532275243 2023 49.0924096751163