0% (1921)

41% (1981)

56% (1975)

51% (1961)

65% (1974)

67% (1971)

46% (1976)

53% (1984)

64% (1973)

43% (1976)

55% (1993)

50% (1960)

56% (1999)

46% (1978)

52% (1976)

64% (1980)

76% (1944)

52% (1999)

42% (1978)

67% (1965)