60% (1958)

55% (1979)

53% (1946)

72% (1936)

61% (1956)

60% (1962)

62% (1972)

68% (1975)

50% (1965)

46% (1988)

51% (1955)

73% (1964)

42% (1956)

56% (1979)

57% (1979)

51% (1969)

56% (1972)

51% (1980)

42% (1989)

66% (1935)