Year % of total population 1960 44.0937476645015 1961 44.2665107749033 1962 44.4551878223485 1963 44.6473134059405 1964 44.8284029944407 1965 44.9974538913937 1966 45.1598916458238 1967 45.31729964894 1968 45.4569113118818 1969 45.5686120398101 1970 45.6582801301736 1971 45.7242242271217 1972 45.7653420053845 1973 45.791304305357 1974 45.8033460750142 1975 45.8028555747418 1976 45.7951252565917 1977 45.7908519926459 1978 45.7916435092978 1979 45.7937143174576 1980 45.8024515199431 1981 45.8143212788311 1982 45.832407210133 1983 45.8611036878929 1984 45.8951499048704 1985 45.9417408884925 1986 45.9995571154351 1987 46.057849920726 1988 46.1083007801611 1989 46.1364645569075 1990 46.1420819806417 1991 46.1318629141713 1992 46.1012744457793 1993 46.0398675351635 1994 45.9480581663824 1995 45.8542708191075 1996 45.7842777870068 1997 45.737868860397 1998 45.7031267450394 1999 45.6700617511646 2000 45.6404308409926 2001 45.6133286482266 2002 45.5853120013207 2003 45.5709741616551 2004 45.5652737886485 2005 45.5495068192698 2006 45.5329679529092 2007 45.5281190301891 2008 45.5306238990482 2009 45.5414071152937 2010 45.5615670487692 2011 45.5852119477663 2012 45.6236158696088 2013 45.681683260431 2014 45.743866727597 2015 45.8152920121187 2016 45.8987086744404 2017 45.9824785585888 2018 46.0663969870275 2019 46.1505670330358 2020 46.2354221181075 2021 46.3199316512613 2022 46.3847046255615 2023 46.430111063697