Year % of total population 1960 52.1182041347947 1961 52.1371186831047 1962 52.1570727379012 1963 52.1129662237626 1964 51.9771216856146 1965 51.8083155275784 1966 51.653994531099 1967 51.5126694780924 1968 51.4440052011134 1969 51.4308066461003 1970 51.4031360184647 1971 51.3610615220777 1972 51.3313785108887 1973 51.2857420051021 1974 51.1944833220925 1975 51.0845459402405 1976 50.9705492377509 1977 50.8482005703072 1978 50.684464670102 1979 50.4669030404143 1980 50.2317949550254 1981 50.0278782835222 1982 49.869170233916 1983 49.7919614675317 1984 49.7742228913744 1985 49.830618589573 1986 49.9645165751272 1987 50.1443447871174 1988 50.31478842884 1989 50.4840623802974 1990 50.7016462481968 1991 50.9203176516313 1992 51.140606430078 1993 51.3329086845535 1994 51.4957713736726 1995 51.7057192046445 1996 51.9742413902999 1997 52.1902217106318 1998 52.3365954313668 1999 52.4620234361293 2000 52.550982332021 2001 52.6168886985586 2002 52.6564331170962 2003 52.6653765618706 2004 52.64139411404 2005 52.5750316519562 2006 52.4838080183912 2007 52.3906453602756 2008 52.2852252391766 2009 52.1625373949847 2010 52.0498125409861 2011 51.9900909667385 2012 51.9839828025439 2013 52.0001337566022 2014 52.0338568766075 2015 52.0839301679325 2016 52.1760708604475 2017 52.3189387348528 2018 52.5048474841206 2019 52.7333021682597 2020 52.9949476309012 2021 53.274958422405 2022 53.5391079400165 2023 53.7862896090231