81% (1952)

49% (1973)

56% (2007)

50% (1948)

53% (1966)

66% (1950)

73% (1967)

48% (1989)

59% (1955)

51% (1956)

50% (1969)

50% (1959)

79% (1969)

57% (1950)

50% (1963)

64% (1956)

61% (1949)

45% (1970)

55% (1973)

55% (1955)