Year % of total population 1960 50.5038738305603 1961 50.5283049818235 1962 50.550845009282 1963 50.5718739730264 1964 50.5921121621258 1965 50.6126059639558 1966 50.6333293305981 1967 50.6530305865596 1968 50.6709204237849 1969 50.6854952942639 1970 50.7623222199543 1971 50.8929465380597 1972 51.0043843652141 1973 51.0964319573611 1974 51.1675218047507 1975 51.263268025054 1976 51.4065371612784 1977 51.7294163808584 1978 52.4639319114007 1979 53.129923782643 1980 52.1570013642696 1981 51.0675777316964 1982 50.9391704484514 1983 50.9403732083812 1984 51.0400405211984 1985 51.0834513259571 1986 51.1386340754871 1987 51.3400179013975 1988 51.6600358730654 1989 51.8324767380712 1990 51.8875372717509 1991 51.9201103507819 1992 52.0553914339716 1993 52.2609991108779 1994 52.3876756051474 1995 52.4389075863916 1996 52.4378540997449 1997 52.4360300256962 1998 52.4374794559645 1999 52.4529264571004 2000 52.4988685790807 2001 52.539531178716 2002 52.5715740909784 2003 52.6123757310886 2004 52.6759122139259 2005 52.7685671849566 2006 52.8090367860482 2007 52.8335655048027 2008 52.8939399046098 2009 52.9504464183612 2010 53.0040995279433 2011 53.0614776767773 2012 53.0821884504804 2013 53.0583186565494 2014 53.0287094465382 2015 52.9998897204558 2016 52.9731114675842 2017 52.9483934792393 2018 52.9237551175298 2019 52.9001977777616 2020 52.8693272721959 2021 52.8328465946592 2022 52.7858550242556 2023 52.7209083197418