0% (1975)

0% (1989)

82% (1988)

67% (1979)

90% (1987)

70% (1983)

80% (1991)

83% (1984)

76% (1980)

80% (1967)

20% (1990)

70% (1980)

60% (1990)

0% (1988)

50% (1977)

75% (1989)

47% (1974)

70% (1978)

0% (1975)

60% (1984)