60% (1968)

42% (1979)

69% (1973)

54% (1961)

50% (1959)

63% (1961)

52% (1992)

50% (1955)

55% (1981)

66% (1966)

60% (1963)

60% (1959)

66% (1961)

63% (1957)

52% (1968)

58% (1961)

63% (1953)

50% (1965)

52% (1968)

60% (1959)