73% (1977)

85% (1975)

0% (1982)

0% (1987)

86% (1967)

0% (1982)

85% (1976)

76% (1983)

75% (1991)

50% (1988)

71% (1978)

50% (1986)

53% (1985)

50% (1987)

50% (1980)

0% (1983)

70% (1979)

63% (1980)

60% (1985)

63% (1984)