Year % of total population 1960 50.1295477193657 1961 50.1127256849763 1962 50.1217691495008 1963 50.1307388557813 1964 50.140182433718 1965 50.1521823050198 1966 50.166681492851 1967 50.182204946494 1968 50.199668458507 1969 50.2182006814011 1970 50.2377134138993 1971 50.2505939173895 1972 50.2576198694172 1973 50.2669671788618 1974 50.2779581429332 1975 50.2909105540579 1976 50.3052870866415 1977 50.3202088844175 1978 50.3346955344005 1979 50.3497821769906 1980 50.3655985278395 1981 50.3774596440105 1982 50.3869098390409 1983 50.397496312817 1984 50.4086947669287 1985 50.4210718404081 1986 50.4351288470647 1987 50.4510898172857 1988 50.4695101852462 1989 50.4908373921001 1990 50.5173226112143 1991 50.5362211327571 1992 50.5140953398533 1993 50.4624666583689 1994 50.4114490638333 1995 50.3613861583713 1996 50.3139053917945 1997 50.2703218041051 1998 50.227766199681 1999 50.1823185323754 2000 50.1358933721186 2001 50.0903516541657 2002 50.0458357829501 2003 50.0385241439883 2004 50.0707500026301 2005 50.1049744046734 2006 50.1379938736786 2007 50.1699225798094 2008 50.2011536166545 2009 50.2324101706737 2010 50.2648636507062 2011 50.2989667172783 2012 50.3336173964939 2013 50.4415188247572 2014 50.6159509529167 2015 50.7806964217363 2016 50.9398790915929 2017 51.0932169191827 2018 50.8551088841192 2019 50.8207167923 2020 51.0915677582344 2021 51.0749260161056 2022 51.0361976738722 2023 50.9944288392965