86% (2018)

82% (2005)

80% (2009)

80% (2004)

79% (2009)

80% (2004)

81% (1971)

85% (2017)

63% (1977)

83% (2018)

68% (1957)

68% (1955)

76% (2009)

73% (1966)

75% (2013)

73% (1963)

79% (1964)

77% (1997)

66% (1995)

55% (1958)