75% (1977)

70% (1983)

50% (1974)

70% (1984)

0% (1984)

70% (1978)

65% (1983)

76% (1980)

75% (1989)

80% (1981)

70% (1985)

50% (1977)

65% (1986)

0% (1975)

50% (1991)

0% (1982)

90% (1986)

80% (1988)

100% (1966)

73% (1984)