Year % of total population 1960 48.6482449589246 1961 48.6715795597789 1962 48.7166227905228 1963 48.7630415964281 1964 48.8126765536723 1965 48.8820486511906 1966 48.9262913522925 1967 48.9415647134578 1968 48.9729771946267 1969 49.037732989847 1970 49.0637119113573 1971 49.0377994418874 1972 48.9897730107259 1973 48.9466858284553 1974 48.9211360816214 1975 48.9162411659284 1976 48.9237697860785 1977 48.9323727933541 1978 48.9340715285732 1979 48.9374317366204 1980 48.9357173265219 1981 48.8975013946387 1982 48.8449684734357 1983 48.8090377024636 1984 48.7790819534689 1985 48.7582885812974 1986 48.7372940976687 1987 48.709210587741 1988 48.6818467618791 1989 48.6648807466298 1990 48.6866870216237 1991 48.7304049640758 1992 48.7679220416151 1993 48.8060343143002 1994 48.842946756426 1995 48.8811070953727 1996 48.9229357798165 1997 48.9564216056713 1998 48.9903362012614 1999 49.0224676181547 2000 49.0674909840289 2001 49.120430697483 2002 49.1740722278564 2003 49.2242108351599 2004 49.2694269947593 2005 49.3065986655954 2006 49.3410982282668 2007 49.380132309384 2008 49.4283516129609 2009 49.4996929523534 2010 49.5706393917847 2011 49.624378567483 2012 49.688029651152 2013 49.7575242947448 2014 49.8247697110137 2015 49.8929294502414 2016 49.9682841738027 2017 50.0616622525928 2018 50.1610771518255 2019 50.2652099490712 2020 50.3756305613891 2021 50.5073831464417 2022 50.592912158652 2023 50.6216696269982