Year % of total population 1960 50.1067777276911 1961 50.108835437454 1962 50.1134891372737 1963 50.1199007985155 1964 50.1250807456183 1965 50.1302910589503 1966 50.1379457778327 1967 50.1466341275377 1968 50.1568443855124 1969 50.168117714606 1970 50.17969614982 1971 50.19213593997 1972 50.2048530778367 1973 50.2200895062387 1974 50.2457645194273 1975 50.2768106878539 1976 50.3049345480737 1977 50.33154883785 1978 50.3570615778421 1979 50.3812996623289 1980 50.4036008565401 1981 50.4246180952713 1982 50.4431041871957 1983 50.4587721350365 1984 50.4730380844873 1985 50.4879443479751 1986 50.5025724338555 1987 50.5142676085776 1988 50.5178193739203 1989 50.5149301663357 1990 50.5129388427292 1991 50.5116813199902 1992 50.5103489876279 1993 50.5090287312294 1994 50.5083201042149 1995 50.5088225498346 1996 50.5103445967992 1997 50.5132393419912 1998 50.5258033677222 1999 50.5381277726359 2000 50.542256139468 2001 50.5458797714666 2002 50.550577016109 2003 50.5568336938641 2004 50.5610485782512 2005 50.5649264542681 2006 50.5698755358157 2007 50.5745626643171 2008 50.5787680900129 2009 50.5818200181653 2010 50.5829711346664 2011 50.5815943953172 2012 50.5779274227293 2013 50.5722069263448 2014 50.5662672222998 2015 50.5598845769624 2016 50.552131014741 2017 50.543916686282 2018 50.5351455398582 2019 50.5259604316933 2020 50.5147176435568 2021 50.5013501687285 2022 50.4881116012292 2023 50.476401381261