83% (2005)

73% (1995)

80% (1999)

84% (2008)

80% (2013)

74% (1990)

74% (2015)

73% (1975)

79% (2015)

84% (2018)

71% (1968)

77% (2000)

76% (1997)

78% (2010)

77% (1957)

77% (1961)

81% (1971)

79% (2006)

69% (2013)

44% (2004)