Year % of total population 1960 50.4889034214584 1961 50.5086736838051 1962 50.5278436986881 1963 50.5464417970491 1964 50.5663656963885 1965 50.5856440526361 1966 50.6020891128947 1967 50.6172320525939 1968 50.6312833923984 1969 50.6559859120218 1970 50.7264336750769 1971 50.8281857006913 1972 50.9233945407411 1973 51.0110590595168 1974 51.0912838862419 1975 51.1653132908113 1976 51.2347844506496 1977 51.3008637775228 1978 51.3631174352273 1979 51.4197270099264 1980 51.4668632017339 1981 51.494680525465 1982 51.494380557751 1983 51.4911771765375 1984 51.5079980616738 1985 51.5303863081884 1986 51.544115651693 1987 51.5639127098166 1988 51.5982493239608 1989 51.6397809451662 1990 51.6852165272148 1991 51.7312301074581 1992 51.7791863282397 1993 51.8272762258405 1994 51.8675119916698 1995 51.8997228854687 1996 51.9223785076172 1997 51.9230920833937 1998 51.9131431229681 1999 51.8925111300646 2000 51.8480789264246 2001 51.7700317622786 2002 51.686353655503 2003 51.6063658767188 2004 51.5230996671446 2005 51.4285936633961 2006 51.3230640566937 2007 51.2152121665467 2008 51.1115488829582 2009 51.0185959890486 2010 50.9436281067273 2011 50.8958549438539 2012 50.8602641037859 2013 50.826085974799 2014 50.7911941655352 2015 50.7617814371165 2016 50.7359867545822 2017 50.7116002759617 2018 50.69091298092 2019 50.6737610781265 2020 50.6616989953621 2021 50.6550489456623 2022 50.6553982917597 2023 50.6612019395289