85% (1975)

0% (1982)

65% (1977)

85% (1976)

72% (1983)

0% (1987)

84% (1967)

0% (1982)

50% (1986)

50% (1988)

75% (1991)

53% (1985)

50% (1980)

0% (1983)

71% (1978)

50% (1987)

0% (1984)

63% (1980)

0% (1989)

70% (1979)