50% (1958)

83% (1971)

0% (1979)

30% (1959)

0% (1973)

0% (1989)

90% (1985)

0% (1979)

50% (1964)

0% (1959)

60% (1976)

0% (1986)

60% (1968)

80% (1954)

70% (1982)

50% (1979)

60% (1974)

50% (1984)

10% (1981)

0% (1985)