49% (1986)

53% (1981)

69% (1932)

70% (1938)

52% (1975)

68% (1996)

57% (1949)

61% (1952)

59% (1933)

48% (1978)

60% (1954)

59% (1950)

57% (1950)

60% (1981)

65% (1936)

69% (1955)

54% (1965)

57% (1974)

56% (1978)

39% (1993)