Year % of total population 1960 51.35147111112871 1961 51.287439879535306 1962 51.220387656503085 1963 51.15869409556276 1964 51.10432192140357 1965 51.051110625485386 1966 50.99642923552873 1967 50.943184063808395 1968 50.89644396985317 1969 50.85272771832122 1970 50.82152875275927 1971 50.79232758567591 1972 50.75164619275423 1973 50.70859990096017 1974 50.68387158040565 1975 50.650610548532065 1976 50.5808257093374 1977 50.501503673482965 1978 50.42246666692546 1979 50.34380184872508 1980 50.26941760107512 1981 50.21380473671336 1982 50.175294442025745 1983 50.14211971669984 1984 50.11061442309222 1985 50.07653162408558 1986 50.04029197138173 1987 50.002065234377426 1988 49.963773347588464 1989 49.920958134220236 1990 49.87471479120859 1991 49.85157886744036 1992 49.85815237551231 1993 49.86430027869275 1994 49.85824849860418 1995 49.85236848007956 1996 49.84749984553565 1997 49.84996110632367 1998 49.85148818959309 1999 49.84016029077435 2000 49.818787038374666 2001 49.79132198780149 2002 49.76308508253287 2003 49.711495354920324 2004 49.611036062423395 2005 49.48799899583515 2006 49.36138565313941 2007 49.234060223124565 2008 49.10784898082971 2009 48.98000004993879 2010 48.902869366159486 2011 48.868217365458236 2012 48.79658990142839 2013 48.73886998386235 2014 48.726580963465835 2015 48.66444520789483 2016 48.55082095706051 2017 48.43499453843099 2018 48.370129494818684 2019 48.35770035396105 2020 48.38044666572876 2021 48.41792031504841 2022 48.44304358825876 2023 48.47381104480931