Year % of total population 1960 48.87893959390184 1961 48.88133148406172 1962 48.88285557704248 1963 48.883739393464666 1964 48.88440235357885 1965 48.88925417050724 1966 48.896197494898736 1967 48.900750757177775 1968 48.90550970513227 1969 48.90971615637455 1970 48.909787425778376 1971 48.916450249305136 1972 48.919058807277935 1973 48.909462486456846 1974 48.899983057234394 1975 48.89603736071928 1976 48.9028094818948 1977 48.91089571625107 1978 48.91820787623756 1979 48.92772831940556 1980 48.92948072561592 1981 48.929223109236446 1982 48.94033218931431 1983 48.9598339121193 1984 48.98098762117169 1985 49.00505879992881 1986 49.02180726369833 1987 49.028134920073185 1988 49.034495401557244 1989 49.03910032470214 1990 49.04216240692474 1991 49.04309422128563 1992 49.04573627175376 1993 49.05077918913362 1994 49.05457575096595 1995 49.05791399247398 1996 49.06032917164224 1997 49.05816723346353 1998 49.054108089062936 1999 49.05187825998615 2000 49.05031205225795 2001 49.04928415813264 2002 49.04938613008834 2003 49.05019284740843 2004 49.0518520425453 2005 49.05433184234568 2006 49.05899620781978 2007 49.06627005835767 2008 49.07655728824741 2009 49.088364874415824 2010 49.098608448796156 2011 49.10804264693492 2012 49.11758499165149 2013 49.12733574861974 2014 49.13555899125176 2015 49.14466718614791 2016 49.158075873555774 2017 49.172239966401634 2018 49.18531612613037 2019 49.19901165085941 2020 49.21717648826155 2021 49.23883287856347 2022 49.258245750287344 2023 49.273867780538254