Year % of total population 1960 45.3409710856519 1961 45.5221815395095 1962 45.6992484325043 1963 45.8638319412807 1964 46.0189053841823 1965 46.1469311248398 1966 46.2456191991758 1967 46.315761415231 1968 46.3416315521892 1969 46.3489700507657 1970 46.3555739474047 1971 46.3640942502322 1972 46.3791129093824 1973 46.3939528679413 1974 46.4359742054353 1975 46.5317272892417 1976 46.6535112702417 1977 46.7751923685043 1978 46.88415318058 1979 46.9742898843606 1980 47.0528301200216 1981 47.1263622593023 1982 47.2012284913736 1983 47.2775023837537 1984 47.3409332494522 1985 47.4370085564362 1986 47.5720623653188 1987 47.6965180949397 1988 47.8002462587611 1989 47.8936573413418 1990 47.9931720284321 1991 48.0943355589059 1992 48.1834604576475 1993 48.264556936281 1994 48.3427900761694 1995 48.3916067666377 1996 48.3958141456407 1997 48.3805382099316 1998 48.3641105056319 1999 48.3501191970113 2000 48.3503063640901 2001 48.3631718895741 2002 48.371446948858 2003 48.3699272607376 2004 48.3624869677462 2005 48.3541681595216 2006 47.997302807561 2007 47.2256909628882 2008 46.4081001415922 2009 45.6392875253913 2010 44.9159925326696 2011 44.2353915180002 2012 43.5886452718307 2013 42.9755345271606 2014 42.6157441845956 2015 42.4923435770991 2016 42.3848436550637 2017 42.2938688770262 2018 42.223506303113 2019 42.1963576395221 2020 42.2433801546542 2021 42.3277470625574 2022 42.4735627268336 2023 42.6913694457613