59% (1983)

69% (1974)

62% (1966)

63% (1973)

63% (1966)

62% (1941)

55% (1981)

66% (1977)

68% (1953)

54% (1989)

69% (1937)

56% (1969)

63% (1966)

57% (1994)

70% (1977)

70% (1972)

58% (2000)

62% (1955)

54% (1976)

52% (1976)