Year % of total population 1960 50.8481359710643 1961 50.8293421091294 1962 50.8003892032145 1963 50.7649690125716 1964 50.7259773171036 1965 50.6820107792956 1966 50.6339609375259 1967 50.5840310791442 1968 50.5472131927377 1969 50.5908808641162 1970 50.7002571342935 1971 50.7805688054573 1972 50.8062561811882 1973 50.8055695353129 1974 50.8163602447704 1975 50.8553918280602 1976 50.943115942029 1977 51.0109552393902 1978 51.0241226289014 1979 51.058136351191 1980 51.0723552170019 1981 51.0466408486277 1982 51.0209317130179 1983 50.9755184947616 1984 50.9152362463163 1985 50.8638164380159 1986 50.8223502048953 1987 50.7873057051033 1988 50.7575529383415 1989 50.7310111056599 1990 50.7055111277223 1991 50.6803382856386 1992 50.6572464664276 1993 50.6345197179741 1994 50.5442673224789 1995 50.3877019652602 1996 50.2264952203415 1997 50.0606040589857 1998 49.8920178996211 1999 49.7246686787913 2000 49.5241446063152 2001 49.2974821694218 2002 49.0836278286468 2003 48.882143549104 2004 48.6937212215089 2005 48.5217282699954 2006 48.3691510440482 2007 48.2372730587871 2008 48.1251212346893 2009 48.0294839635676 2010 47.9472355105964 2011 47.8298741555914 2012 47.6807837565221 2013 47.5467887946454 2014 47.4281240566005 2015 47.3270065546971 2016 47.2418503610267 2017 47.1732839592636 2018 47.1199148387148 2019 47.078841310959 2020 47.1098318410024 2021 47.1769372993993 2022 47.225399842857 2023 47.2809652697223