Year % of total population 1960 52.64436493304832 1961 52.57048687499588 1962 52.49862089841614 1963 52.42901109485552 1964 52.36438696938058 1965 52.30581728799968 1966 52.2586213592338 1967 52.220100728107674 1968 52.189355749525376 1969 52.16140624887313 1970 52.1375883810151 1971 52.08550038833 1972 51.998570065657184 1973 51.915982707596676 1974 51.83727857991979 1975 51.76771737680376 1976 51.73783168395766 1977 51.73473309820219 1978 51.72821208701278 1979 51.71731425819827 1980 51.693778267524294 1981 51.66434008863142 1982 51.63328053768388 1983 51.60163127316361 1984 51.573385963163844 1985 51.55094969896048 1986 51.535765284538236 1987 51.52664257984983 1988 51.51900674696772 1989 51.497647198587345 1990 51.46715066900806 1991 51.440743441394496 1992 51.42492021536503 1993 51.42426009011239 1994 51.42547133004862 1995 51.42304126219088 1996 51.42195384375436 1997 51.42459071092904 1998 51.43085206593536 1999 51.43722728561805 2000 51.43834855608989 2001 51.43617634609248 2002 51.43264365543259 2003 51.426471735424414 2004 51.41907614086539 2005 51.41234521876889 2006 51.40361087527838 2007 51.393760593346 2008 51.379031588494044 2009 51.36070973191862 2010 51.336736152142045 2011 51.31181455303972 2012 51.28749947773034 2013 51.26184580431821 2014 51.23567121673441 2015 51.213125362322856 2016 51.19374798770647 2017 51.176368310589034 2018 51.1603066749881 2019 51.1498957281618 2020 51.146582846628824 2021 51.14506951040345 2022 51.132815756697575 2023 51.1618835029506