0% (1983)

45% (1976)

0% (1968)

0% (1948)

49% (1980)

20% (1974)

65% (1958)

60% (1984)

80% (1972)

45% (1970)

51% (1954)

10% (1990)

72% (1968)

64% (1985)

50% (1974)

68% (1966)

57% (1983)

47% (1976)

39% (1977)

70% (1977)