Year % of total population 1960 49.7009448053881 1961 49.69388325229737 1962 49.68847690750325 1963 49.685476824849616 1964 49.682025167554485 1965 49.67900631325386 1966 49.6770810652968 1967 49.67436059738059 1968 49.67104518035521 1969 49.668722179980016 1970 49.665855863598324 1971 49.67203263228822 1972 49.686884665142934 1973 49.70341252034327 1974 49.7233326031454 1975 49.74269128857989 1976 49.75606200107565 1977 49.76590630221558 1978 49.77017151074929 1979 49.77344503368933 1980 49.802496109641666 1981 49.811423423571114 1982 49.777080395914766 1983 49.7274580526494 1984 49.66744045749545 1985 49.600787834500544 1986 49.569983060206795 1987 49.579613306046085 1988 49.58158630733832 1989 49.58449507243382 1990 49.59238179478941 1991 49.599776523323136 1992 49.59044004419999 1993 49.56563937261696 1994 49.54494968176547 1995 49.52460918924829 1996 49.50119830585178 1997 49.49334304935966 1998 49.50012894400981 1999 49.50611781647132 2000 49.51760828744602 2001 49.53225752122712 2002 49.54824887302861 2003 49.567184995779876 2004 49.58632688140683 2005 49.60397887048506 2006 49.62214797830388 2007 49.64115317626494 2008 49.65854552377799 2009 49.67328234464544 2010 49.687713914190574 2011 49.70234828514169 2012 49.71618669819848 2013 49.7302205708129 2014 49.74535525022971 2015 49.76599819718395 2016 49.779006761794555 2017 49.786281666477656 2018 49.797605875866715 2019 49.807292940818854 2020 49.81617149993673 2021 49.82328492851151 2022 49.829811940807815 2023 49.837145706055686