51% (1970)

66% (1980)

61% (1972)

61% (1975)

65% (1976)

72% (1944)

33% (1976)

52% (1970)

72% (1976)

51% (1972)

68% (1973)

51% (1969)

0% (1939)

52% (1931)

53% (1969)

51% (1971)

45% (1971)

65% (1970)

48% (1970)

64% (1969)