76% (1952)

45% (1983)

42% (1985)

62% (1964)

53% (1953)

64% (1981)

53% (1956)

42% (1987)

54% (1961)

38% (1995)

50% (1952)

50% (1991)

55% (1964)

34% (1981)

50% (1954)

67% (1956)

53% (1956)

53% (1954)

57% (1950)

50% (1964)