0% (1957)

30% (1990)

20% (1985)

56% (1987)

0% (1969)

80% (1991)

90% (1957)

72% (1964)

30% (1971)

0% (1967)

80% (1960)

50% (1979)

60% (1968)

30% (1959)

0% (1977)

60% (1979)

60% (1966)

100% (1977)

54% (1971)

0% (1985)