75% (1972)

77% (1973)

58% (1972)

53% (1972)

59% (1972)

62% (1971)

65% (1972)

55% (1972)

47% (1977)

41% (1972)

67% (1973)

43% (1971)

62% (1976)

62% (1973)

62% (1973)

70% (1972)

51% (1973)

65% (1976)

60% (1972)

73% (1973)