Year % of total population 1960 49.550825105287 1961 49.5256397352211 1962 49.5050682853678 1963 49.4882030998482 1964 49.4747710029426 1965 49.4645068330769 1966 49.4569453731942 1967 49.4519985554454 1968 49.448170541264 1969 49.4455616899637 1970 49.4443038739269 1971 49.4410661819428 1972 49.4355429073815 1973 49.4319811949542 1974 49.4320676337056 1975 49.4372801223096 1976 49.4439759618807 1977 49.4474782995478 1978 49.4489217940002 1979 49.4516636446982 1980 49.458192820417 1981 49.4620147477994 1982 49.4634778836574 1983 49.4686366129017 1984 49.4757954599264 1985 49.4824045513504 1986 49.4897271096166 1987 49.4983357511943 1988 49.5059770771662 1989 49.5128039138097 1990 49.5184906107428 1991 49.5218731649722 1992 49.5227254134872 1993 49.5229843615053 1994 49.5247561926068 1995 49.5278485689615 1996 49.5314700285373 1997 49.5359336663909 1998 49.5432240923023 1999 49.5543703482805 2000 49.5700645211144 2001 49.5895940493472 2002 49.6102160161145 2003 49.6304689514256 2004 49.6501276908755 2005 49.6686717996061 2006 49.6842499630267 2007 49.6977255679784 2008 49.7096312427918 2009 49.7178878519917 2010 49.7204759538026 2011 49.7147470640653 2012 49.7042364410618 2013 49.6943162281574 2014 49.6816745153912 2015 49.6644631649693 2016 49.6507294026663 2017 49.6364795252575 2018 49.6159012825258 2019 49.6005373743044 2020 49.5918268418787 2021 49.5781144993434 2022 49.5628253077919 2023 49.5533768007476