Year % of total population 1960 50.3454857630386 1961 50.6119577762105 1962 50.727417560999 1963 50.8609283546929 1964 50.9954870224998 1965 51.0899679735748 1966 51.1844165706093 1967 51.2880438377405 1968 51.3668723589374 1969 51.469484973693 1970 51.5130483536235 1971 51.4756429218951 1972 51.4350254390554 1973 51.3918103195821 1974 51.3498664368494 1975 51.3091369250927 1976 51.2718308563991 1977 51.2265254785212 1978 51.1680399578005 1979 51.0937657029915 1980 51.0360394696778 1981 50.9872244895628 1982 50.9184478898732 1983 50.8471899852346 1984 50.7732141428229 1985 50.6809397191505 1986 50.5603283525965 1987 50.4328638290827 1988 50.3088001266445 1989 50.1863228788608 1990 50.1312450594912 1991 50.194160134845 1992 50.3057247142475 1993 50.4101368542508 1994 50.5090569947825 1995 50.6117456174385 1996 50.7257175231653 1997 50.8423413086411 1998 50.9529153636313 1999 51.057776401803 2000 51.0967282925161 2001 51.0108006212547 2002 50.8617135535054 2003 50.7124126298116 2004 50.56134072655 2005 50.5448901714919 2006 50.7865339836575 2007 51.1319129809729 2008 51.4518016485608 2009 51.7482772879819 2010 51.9712448122333 2011 52.0761760642745 2012 52.1236088797539 2013 52.1687350711156 2014 52.2118473344054 2015 52.2437273651164 2016 52.2578783749739 2017 52.2640089222163 2018 52.2688736867613 2019 52.2734621970355 2020 52.2856259588834 2021 52.3053966800537 2022 52.2966640332186 2023 52.2590150868128