50% (1964)

65% (1964)

56% (1961)

51% (1971)

41% (1969)

58% (1989)

60% (1960)

0% (1957)

0% (1965)

50% (1966)

68% (1967)

70% (1977)

40% (1963)

50% (1963)

0% (1985)

43% (1958)

30% (1967)

0% (1959)

30% (1960)

20% (2006)