Year % of total population 1960 55.6795340124836 1961 55.7106066958136 1962 55.7432841675367 1963 55.7793330405635 1964 55.8056027483158 1965 55.7442024330093 1966 55.5977067516167 1967 55.4529660934236 1968 55.317100013757 1969 55.1874515450216 1970 55.0632427939161 1971 55.2465020433608 1972 55.7906252699029 1973 56.359690139967 1974 56.8568546375639 1975 57.2914182297732 1976 57.6705416538908 1977 58.0052451821385 1978 58.302207233343 1979 58.5687213907245 1980 58.8113459920848 1981 58.9484142754948 1982 58.9616308242353 1983 58.9358947753303 1984 58.8969435876885 1985 58.8461582733813 1986 58.7872837608508 1987 58.7234361771672 1988 58.6590722415209 1989 58.5957002012595 1990 58.5331395506148 1991 58.5293650719535 1992 58.5824300683536 1993 58.6356545912454 1994 58.6875099030095 1995 58.7374823390447 1996 58.7847448305508 1997 58.8298656386416 1998 58.8736683698051 1999 58.9203231170888 2000 58.9745896362599 2001 59.0407212803164 2002 59.1243899701199 2003 59.378019571966 2004 59.8905034609113 2005 60.4477554020807 2006 60.9183907821059 2007 61.3206513591125 2008 61.6713934342811 2009 61.9880571756568 2010 62.1268987224435 2011 62.1915109353614 2012 62.486621782799 2013 62.3983393478342 2014 61.8322764873766 2015 61.792309465533 2016 62.2153127595925 2017 62.615026832158 2018 62.661798916186 2019 62.4693144370052 2020 62.297753793819 2021 62.0973644555156 2022 61.9602331967834 2023 61.8386694392292