56% (2007)

53% (1970)

81% (1952)

53% (1966)

57% (1950)

79% (1969)

40% (1990)

50% (1963)

74% (1967)

66% (1950)

48% (1973)

50% (1959)

55% (1973)

56% (1940)

56% (1962)

61% (1949)

43% (1938)

59% (1955)

55% (1954)

43% (1973)