64% (1958)

75% (1979)

67% (1970)

69% (1975)

70% (1956)

72% (1979)

67% (1964)

47% (1947)

50% (1991)

57% (1964)

71% (1988)

68% (1979)

56% (1986)

59% (1976)

55% (1976)

74% (1959)

61% (1990)

0% (1966)

64% (1976)

50% (1974)