63% (1982)

45% (1971)

60% (1986)

50% (1965)

0% (1982)

60% (1980)

0% (1977)

70% (1981)

64% (1986)

37% (1976)

0% (1976)

0% (1980)

90% (1971)

58% (1981)

61% (1979)

35% (1984)

50% (1988)

0% (1988)

83% (1968)

46% (1986)