Year % of total population 1960 49.0906513738855 1961 49.2265033641174 1962 49.3611631807269 1963 49.4902745149661 1964 49.6150103888587 1965 49.734728802975 1966 49.8498797493018 1967 49.9606518049613 1968 50.0669941032279 1969 50.1720075268137 1970 50.2741075466715 1971 50.3797702544574 1972 50.4846706008992 1973 50.5817958874981 1974 50.6683874638364 1975 50.7417026204035 1976 50.8005164467887 1977 50.8377919726259 1978 50.8611645359323 1979 50.8794227621909 1980 50.8876069942349 1981 50.888790001867 1982 50.8860983550941 1983 50.8727711339943 1984 50.8517861630482 1985 50.8324847713144 1986 50.8222943782806 1987 50.8206405788456 1988 50.8202827422862 1989 50.8189778931054 1990 50.8192042785298 1991 50.8351571329358 1992 50.8588011424636 1993 50.8743683356072 1994 50.883804751361 1995 50.8882755127538 1996 50.8954252858196 1997 50.8980300078377 1998 50.8690112715195 1999 50.8163051909238 2000 50.7616751079367 2001 50.7019482171248 2002 50.6356142352573 2003 50.5676910586788 2004 50.501053214653 2005 50.4420649940722 2006 50.3979116866004 2007 50.3739426935177 2008 50.3692973674349 2009 50.3683636994248 2010 50.3656267712446 2011 50.3597106269354 2012 50.3433850664484 2013 50.326098148784 2014 50.3081534776142 2015 50.286304335945 2016 50.2621566508943 2017 50.2383310064026 2018 50.2225230048974 2019 50.2126730992263 2020 50.1984469738962 2021 50.179381334052 2022 50.166386151535 2023 50.1591188691819