62% (1963)

60% (1972)

10% (1976)

40% (1969)

52% (1978)

0% (1964)

0% (1975)

55% (1966)

56% (1967)

51% (1973)

60% (1970)

40% (1966)

0% (1957)

47% (1982)

53% (1975)

50% (1982)

0% (1990)

41% (1977)

56% (1965)

15% (1981)