63% (1961)

60% (1951)

66% (2009)

45% (1953)

62% (1967)

53% (1984)

52% (1964)

46% (1985)

47% (1983)

48% (1986)

55% (1948)

43% (1957)

50% (1960)

47% (1990)

45% (1956)

42% (1986)

50% (1957)

50% (1956)

61% (1956)

50% (1990)