61% (1952)

51% (1933)

58% (1966)

56% (1950)

64% (1969)

54% (1974)

51% (1982)

62% (1957)

64% (1967)

57% (1997)

50% (1954)

50% (1952)

32% (1982)

60% (1977)

66% (1971)

61% (1938)

58% (1944)

61% (1959)

60% (1984)

65% (1957)