67% (1983)

62% (1975)

0% (1974)

59% (1973)

50% (1977)

66% (1973)

45% (1985)

30% (1988)

66% (1973)

68% (1972)

61% (1973)

50% (1972)

61% (1980)

62% (1973)

55% (1972)

60% (1980)

30% (1984)

70% (1984)

70% (1974)

60% (1976)