0% (1972)

10% (1978)

55% (1972)

65% (1971)

63% (1973)

50% (1977)

60% (1976)

61% (1973)

20% (1985)

60% (1973)

63% (1974)

40% (1978)

60% (1985)

0% (1975)

45% (1985)

57% (1972)

67% (1972)

70% (1974)

53% (1976)

45% (1980)