62% (1969)

72% (1969)

60% (1976)

59% (1969)

70% (1955)

68% (1972)

50% (1971)

55% (1970)

66% (1975)

55% (1970)

60% (1973)

50% (1953)

46% (1971)

70% (1972)

58% (1956)

50% (1978)