0% (1929)

30% (1960)

60% (1979)

50% (1987)

50% (1958)

20% (1988)

50% (1991)

38% (1939)

60% (1968)

0% (1982)

80% (1976)

60% (1965)

0% (1967)

50% (1982)

60% (1982)

60% (1968)

0% (1980)

0% (1974)

55% (1983)

47% (1972)