72% (1956)

100% (1971)

60% (1968)

83% (1973)

50% (1977)

0% (1985)

61% (1951)

0% (1988)

55% (1986)

55% (1982)

0% (1965)

75% (1934)

0% (1972)

78% (1965)

65% (1986)

50% (1961)

66% (1949)

46% (1973)

80% (1980)

40% (1959)