77% (1957)

68% (1999)

76% (2015)

62% (2000)

52% (1959)

20% (2008)

73% (1980)

73% (2013)

63% (1983)

78% (2017)

82% (2017)

61% (2004)

74% (1995)

73% (2016)

67% (2003)

77% (2014)

83% (2014)

61% (1987)

68% (1979)

77% (1988)