55% (1971)

41% (1981)

40% (1951)

0% (1971)

0% (1966)

0% (1988)

51% (1969)

90% (1979)

0% (1965)

0% (1986)

73% (1978)

77% (1973)

42% (1981)

46% (1968)

90% (1984)

55% (1967)

50% (1963)

45% (1984)

72% (1964)

44% (1986)