71% (1998)

49% (1979)

47% (1992)

62% (1992)

50% (1955)

64% (1991)

73% (1949)

58% (1950)

50% (1978)

48% (1974)

65% (1983)

53% (1981)

52% (1972)

54% (1937)

57% (1937)

59% (1964)

0% (1985)

20% (1998)

57% (1975)

57% (1981)