65% (1958)

69% (1937)

62% (1969)

67% (1974)

78% (1960)

52% (1982)

59% (1983)

70% (1959)

71% (2001)

57% (2006)

55% (1996)

68% (1976)

68% (1954)

74% (1955)

52% (1969)

65% (2004)

73% (1960)

72% (1981)

63% (2003)

67% (1980)