Year % of total population 1960 50.387880427245676 1961 50.38881444727002 1962 50.391275862351556 1963 50.39565600229346 1964 50.40051236038627 1965 50.405510110232214 1966 50.41071266510676 1967 50.413312047967246 1968 50.4136304604911 1969 50.41499820290305 1970 50.42372968063318 1971 50.42433472981796 1972 50.4117616922322 1973 50.395607523570085 1974 50.37320085375754 1975 50.35012088330969 1976 50.33511708308751 1977 50.32073312967121 1978 50.31049694872479 1979 50.301374885461804 1980 50.24966536852963 1981 50.234107126750516 1982 50.29206571034844 1983 50.37322964715654 1984 50.476537002394195 1985 50.59496732753484 1986 50.65138288007565 1987 50.64033663560324 1988 50.64575593400276 1989 50.65086691915386 1990 50.64438264645839 1991 50.63602905817493 1992 50.6554124954838 1993 50.701782575551874 1994 50.74141362492453 1995 50.77887742532963 1996 50.81976438571689 1997 50.833589246243015 1998 50.8255544077005 1999 50.821627849830165 2000 50.80884328936577 2001 50.790462843079276 2002 50.772365158562984 2003 50.75242406433685 2004 50.73159643094413 2005 50.71165104892949 2006 50.69085235104513 2007 50.66999406798482 2008 50.65177721712575 2009 50.638232096935965 2010 50.62490735992814 2011 50.609572779431794 2012 50.5938584108238 2013 50.57737194229823 2014 50.55916670217938 2015 50.5319401773339 2016 50.5189349211102 2017 50.51585896969789 2018 50.50488678166118 2019 50.4959927378322 2020 50.48654433259728 2021 50.478915686133995 2022 50.47234719710619 2023 50.46421377030187