59% (1981)

53% (1969)

60% (1970)

58% (1970)

45% (1978)

56% (1971)

20% (1956)

52% (1982)

60% (1973)

55% (1982)

23% (1981)

30% (1972)

50% (1972)

64% (1978)

40% (1981)

20% (1977)

0% (1973)

0% (1953)

35% (1977)

48% (1982)