64% (1957)

68% (2010)

62% (2012)

53% (2014)

59% (1972)

62% (2020)

58% (2011)

60% (1984)

73% (1958)

61% (1970)

64% (1970)

61% (1966)

57% (1973)

56% (1965)

61% (1959)

56% (1971)

68% (1959)

55% (1964)

64% (1971)

52% (2014)