60% (1976)

10% (1982)

62% (1980)

33% (1969)

30% (1975)

69% (1970)

47% (1975)

58% (1968)

78% (1981)

0% (1975)

70% (1976)

52% (1971)

59% (1971)

67% (1973)

0% (1953)

50% (1977)

0% (1977)

57% (1971)

46% (1976)

0% (1980)