Year % of total population 1960 48.5611836376942 1961 48.5923598968907 1962 48.6169255228945 1963 48.6414824970911 1964 48.6639842838097 1965 48.6867423299348 1966 48.7090211934668 1967 48.7279571200587 1968 48.7460559924441 1969 48.7622859530941 1970 48.7825876285344 1971 48.8045511255735 1972 48.8247776267653 1973 48.8490434750017 1974 48.9034513743417 1975 48.9582158559554 1976 48.9815231517894 1977 49.0023712597036 1978 49.0227799514033 1979 49.0396277497908 1980 49.0514425259203 1981 49.0598961843153 1982 49.0643881155856 1983 49.064914214813 1984 49.0617030949056 1985 49.0542816682921 1986 49.0445315371474 1987 49.0326398305414 1988 49.0159874798752 1989 48.9942574671436 1990 48.966799570963 1991 48.9519197894467 1992 48.9544133575391 1993 48.9594766140479 1994 48.9644802451057 1995 48.9671005639066 1996 48.9681452662088 1997 48.9699390617981 1998 48.9737826757739 1999 48.9774095318679 2000 48.9820380622278 2001 48.9854209969377 2002 49.0332975670876 2003 49.1149997383394 2004 49.2003429449382 2005 49.2895036219674 2006 49.3494482600625 2007 49.4117219589663 2008 49.4615757227573 2009 49.4514034446167 2010 49.4112053282978 2011 49.3651917925807 2012 49.3007155732168 2013 49.2251251135672 2014 49.1671489518967 2015 49.1292153476848 2016 49.0957100865303 2017 49.0605478212878 2018 49.0323066252952 2019 49.0181741367512 2020 49.0094409007283 2021 49.0065783357043 2022 49.0112141581875 2023 49.0163853976298