0% (1974)

0% (1976)

60% (1980)

0% (1977)

70% (1973)

90% (1986)

67% (1973)

73% (1969)

73% (1977)

80% (1983)

70% (1985)

69% (1975)

70% (1978)

0% (1989)

60% (1990)

45% (1980)

82% (1988)

57% (1972)

69% (1984)

52% (1986)