Year % of total population 1960 48.0739156705013 1961 48.1012695775985 1962 48.1049449697721 1963 48.079568871773 1964 48.0493211667986 1965 48.0023039145101 1966 47.952988237771 1967 47.9270719129411 1968 47.9064941598151 1969 47.8883387000446 1970 47.8878553266501 1971 47.9157344199759 1972 47.9638396438503 1973 48.033005158242 1974 48.1371749541102 1975 48.2599595142967 1976 48.3950808981088 1977 48.5273280599295 1978 48.647493174864 1979 48.7619185949751 1980 48.8640144849769 1981 48.9710858334546 1982 49.0967650764864 1983 49.2172325495937 1984 49.3079754743041 1985 49.3523679672775 1986 49.3801318409161 1987 49.4108438518001 1988 49.4332368966547 1989 49.4517731711496 1990 49.4622213951044 1991 49.4718854259907 1992 49.4898892115736 1993 49.5028528332458 1994 49.5278196759852 1995 49.5685467292045 1996 49.5952178867233 1997 49.618222451966 1998 49.6441884107082 1999 49.670314129647 2000 49.6806208230214 2001 49.6748733684611 2002 49.6709900444528 2003 49.6602517945832 2004 49.6448123523109 2005 49.6248244792886 2006 49.5993404621143 2007 49.5810289724593 2008 49.5826086535833 2009 49.6072202166065 2010 49.6710487038961 2011 49.7741818963055 2012 49.9142837869586 2013 50.0881092508999 2014 50.2892879462236 2015 50.5189682398884 2016 50.7730300082317 2017 51.0345215924187 2018 51.2929578954649 2019 51.5520168375907 2020 51.7913760919594 2021 52.0127271484657 2022 52.1300015376365 2023 52.1462853041879