67% (1968)

60% (1968)

60% (1954)

41% (1977)

72% (1971)

59% (1974)

71% (1973)

77% (1966)

73% (1973)

47% (1970)

55% (1958)

63% (1972)

58% (1978)

75% (1967)

58% (1976)

72% (2008)

73% (1959)

55% (1972)

70% (1974)

61% (1957)