50% (1981)

50% (1977)

0% (1977)

0% (1984)

35% (1974)

58% (1979)

0% (1984)

52% (1979)

0% (1976)

47% (1985)

0% (1976)

0% (1972)

0% (1972)

40% (1973)

0% (1972)

51% (1985)

0% (1986)

57% (1983)

0% (1974)

70% (1982)