78% (1967)

58% (1967)

72% (1970)

63% (1969)

72% (1971)

63% (1966)

52% (1967)

63% (1967)

32% (1967)

58% (1966)

71% (1970)

59% (1976)

51% (1975)

61% (1968)

57% (1964)

52% (1967)

68% (1968)

50% (1967)

53% (1966)

54% (1970)