Year % of total population 1960 49.8452799488625 1961 49.8649593685454 1962 49.8838518583966 1963 49.9015639069359 1964 49.9164992941407 1965 49.9273306376815 1966 49.9336047438073 1967 49.9353087267649 1968 49.9336184698643 1969 49.9299215975425 1970 49.9252075964703 1971 49.9207477704247 1972 49.9263593555887 1973 49.9320659011081 1974 49.928986993046 1975 49.9257557670953 1976 49.9212879997449 1977 49.9110798109706 1978 49.8740308590833 1979 49.7811194996377 1980 49.7163298982929 1981 49.7102563853524 1982 49.703485718115 1983 49.6759201140431 1984 49.6176215491573 1985 49.5494858669892 1986 49.489215649879 1987 49.4307570564534 1988 49.38718778288 1989 49.3767809588064 1990 49.3790416810555 1991 49.3831819413956 1992 49.3890230603193 1993 49.3942482021628 1994 49.3991256707731 1995 49.4045759688466 1996 49.401825412773 1997 49.3897624205417 1998 49.3797431406888 1999 49.3686976200217 2000 49.3531609600365 2001 49.3360953819584 2002 49.3178748987927 2003 49.2988621962322 2004 49.279485828938 2005 49.2696544140644 2006 49.2692607396528 2007 49.2691066692846 2008 49.2690599295608 2009 49.2690670825189 2010 49.2692974100258 2011 49.2698171980965 2012 49.2705626481712 2013 49.2715192178814 2014 49.2728079223332 2015 49.2746639807779 2016 49.2774330573222 2017 49.2809078020138 2018 49.2840409036016 2019 49.2852559542996 2020 49.2806208503833 2021 49.2753855900411 2022 49.2745227960656 2023 49.2738752623714