Year % of total population 1960 55.1989214189875 1961 55.0755323877284 1962 54.9612090442792 1963 54.8523012878164 1964 54.7549797644206 1965 54.6716330246737 1966 54.5963638428435 1967 54.5306636917009 1968 54.467281859495 1969 54.4078419358549 1970 54.4333627148761 1971 54.4613698846935 1972 54.4107353892565 1973 54.3527383888757 1974 54.2946818639989 1975 54.2371487983556 1976 54.1737398098321 1977 54.0990112979488 1978 54.0206105361432 1979 53.959752210287 1980 53.9063596008084 1981 53.8450944325758 1982 53.7811075674623 1983 53.7146910495478 1984 53.6455331355236 1985 53.572215455237 1986 53.4854756119625 1987 53.3845813538659 1988 53.2834707426266 1989 53.1983512751885 1990 53.1429322480707 1991 53.1150594304409 1992 53.1040335147141 1993 53.1076909603514 1994 53.1329135852607 1995 53.177580436541 1996 53.2207209344997 1997 53.2471616257978 1998 53.2582156943698 1999 53.2693607230279 2000 53.2972159818296 2001 53.343221035271 2002 53.3984850457177 2003 53.467185318843 2004 53.5487287621907 2005 53.6353287334415 2006 53.7085795041113 2007 53.7475579626622 2008 53.764855283497 2009 53.7700455135806 2010 53.7603447142145 2011 53.7374956093572 2012 53.7068486038391 2013 53.6739164632828 2014 53.646264994708 2015 53.6260253786333 2016 53.6073233476231 2017 53.5873289964501 2018 53.5676166800889 2019 53.5501227145566 2020 53.5473054858739 2021 53.5552174733002 2022 53.5575275402787 2023 53.5546846796558