50% (1974)

40% (1990)

40% (1956)

70% (1958)

50% (1960)

52% (1969)

45% (1959)

45% (1958)

50% (1949)

56% (1959)

50% (1946)

42% (1988)

60% (1951)

50% (1960)

50% (1961)

55% (1957)

50% (1956)

45% (1947)

50% (1992)

45% (1971)