37% (1966)

60% (1970)

44% (1988)

44% (1932)

51% (1939)

47% (1987)

51% (1949)

67% (1971)

47% (1964)

80% (1974)

65% (1979)

50% (1981)

70% (1938)

52% (1967)

47% (1969)

48% (1963)

46% (1972)

60% (1973)

43% (1983)

70% (1979)