76% (1951)

74% (1976)

83% (2020)

60% (1997)

66% (1993)

61% (2017)

73% (1972)

59% (2012)

75% (2006)

63% (2002)

80% (2004)

67% (1998)

44% (1998)

66% (2008)

65% (2001)

77% (1956)

63% (2003)

70% (1974)

71% (1973)

66% (1998)