56% (2007)

81% (1952)

73% (1967)

79% (1969)

53% (1966)

67% (1950)

49% (1973)

64% (1956)

59% (1955)

51% (1956)

61% (1949)

43% (1973)

43% (1938)

48% (1989)

45% (1970)

54% (1960)

56% (1962)

50% (1949)

56% (1940)

50% (1963)