67% (1949)

63% (1953)

64% (1962)

67% (1949)

46% (1982)

47% (1952)

67% (1959)

55% (1969)

56% (1972)

68% (1970)

61% (1952)

55% (1979)

56% (1984)

59% (2001)

60% (1966)

59% (2000)

72% (1956)

67% (1945)

50% (1956)

60% (1971)