Year % of total population 1960 49.1229284402953 1961 49.1469049784982 1962 49.1707271403482 1963 49.1937269058525 1964 49.2154301232991 1965 49.2358205219769 1966 49.2536628205755 1967 49.2684059487935 1968 49.2801212074665 1969 49.2892979141296 1970 49.2977783757687 1971 49.3071519467991 1972 49.3171916942357 1973 49.327636677234 1974 49.3390217877346 1975 49.3508469769597 1976 49.3631104917998 1977 49.3760784928909 1978 49.389738088901 1979 49.4040738272656 1980 49.4187237830399 1981 49.4334758463416 1982 49.4484323108387 1983 49.4635927870349 1984 49.4792503365421 1985 49.4960777218699 1986 49.5139655356571 1987 49.532937697602 1988 49.5532240319854 1989 49.5808900016051 1990 49.609178568863 1991 49.6314213499043 1992 49.6525186914095 1993 49.6716202000461 1994 49.6883765407861 1995 49.7031553345334 1996 49.7161212668756 1997 49.7278280843793 1998 49.7387162035466 1999 49.7488039903232 2000 49.7584227234219 2001 49.767332761847 2002 49.7754238238508 2003 49.783065669938 2004 49.7906922894536 2005 49.7987820445341 2006 49.808123499179 2007 49.8192687172858 2008 49.8324309725469 2009 49.846895901856 2010 49.8617541533777 2011 49.875998800653 2012 49.8886776664495 2013 49.8992818631992 2014 49.908133449119 2015 49.9158348072666 2016 49.922783394133 2017 49.9297984430415 2018 49.9379029615234 2019 49.9471711023094 2020 49.9610655375052 2021 49.9795576782579 2022 49.9972666942039 2023 50.0105526145753