Year % of total population 1960 50.456592294453124 1961 50.42820571186165 1962 50.412260662555866 1963 50.40693036077932 1964 50.40260582121544 1965 50.394835056884546 1966 50.38751971933491 1967 50.38301256923714 1968 50.38025885351089 1969 50.37975432612661 1970 50.38052666147413 1971 50.38576109009145 1972 50.39461671189955 1973 50.402405274904126 1974 50.40776692701596 1975 50.41025684616021 1976 50.40693989158416 1977 50.4012505643473 1978 50.397538843355605 1979 50.394144830946765 1980 50.39156043050077 1981 50.3888786676661 1982 50.38107862009204 1983 50.365975472745646 1984 50.349064112365426 1985 50.3307546690863 1986 50.3212850241489 1987 50.323597261559364 1988 50.32730024006684 1989 50.334125701107496 1990 50.343054162646496 1991 50.351899053101846 1992 50.35585512136324 1993 50.35347556754133 1994 50.35227644937203 1995 50.35259430749612 1996 50.353110073348745 1997 50.35790162469612 1998 50.36352374388861 1999 50.3685979092818 2000 50.375133870164504 2001 50.37923509184031 2002 50.3810501061915 2003 50.383961795796324 2004 50.388019762714606 2005 50.391733416708625 2006 50.3951209415126 2007 50.39812594662687 2008 50.39985348544609 2009 50.400934381478194 2010 50.401200627346455 2011 50.40026498862433 2012 50.3992288980544 2013 50.39702538548313 2014 50.39438024981267 2015 50.391456102118525 2016 50.383170191936294 2017 50.370246307152975 2018 50.356902577495795 2019 50.342122637940065 2020 50.32168052767057 2021 50.29545579798842 2022 50.27546318483669 2023 50.25344499868767