Year % of total population 1960 50.8261423647478 1961 50.7944802281239 1962 50.7629956235177 1963 50.7345740632825 1964 50.7058470678563 1965 50.6792124191669 1966 50.657306350929 1967 50.638945185621 1968 50.616316449849 1969 50.5889374535514 1970 50.5642158665409 1971 50.5399504889862 1972 50.5105921956872 1973 50.4820972705796 1974 50.4590552573887 1975 50.4362272779824 1976 50.4139725358855 1977 50.3947577911576 1978 50.3833820842417 1979 50.3880978270287 1980 50.4428645982396 1981 50.5350428562164 1982 50.6214365108316 1983 50.623264200263 1984 50.6221480762199 1985 50.5973271598443 1986 50.5263830336384 1987 50.4490793656195 1988 50.4441227142956 1989 50.5164460556164 1990 50.5478971771821 1991 50.5800808645123 1992 50.6143439386995 1993 50.5733583987111 1994 50.4529124842647 1995 50.4082794833821 1996 50.5022762309416 1997 50.5709774092532 1998 50.5720503622546 1999 50.57181583206 2000 50.5543310144493 2001 50.5535463485278 2002 50.5687961920398 2003 50.590830032894 2004 50.6189626155334 2005 50.6440915016555 2006 50.6678483623067 2007 50.690749513316 2008 50.7225346694507 2009 50.787299302722 2010 50.8406031257405 2011 50.8544364769146 2012 50.8571199216208 2013 50.8460602599487 2014 50.8300063336188 2015 50.7819726397266 2016 50.7126197768228 2017 50.6586627849857 2018 50.6298617829442 2019 50.6227416727781 2020 50.6106603085369 2021 50.5921117543353 2022 50.5770320530715 2023 50.5662140036969