86% (1967)

67% (1966)

65% (1968)

71% (1968)

61% (1967)

80% (1968)

50% (1974)

0% (1973)

0% (1970)

70% (1963)

0% (1974)

70% (1974)

0% (1967)

65% (1974)

0% (1968)

0% (1973)

50% (1966)

80% (1972)

70% (1976)

73% (1974)