62% (1989)

50% (1949)

62% (1965)

67% (1966)

35% (1997)

58% (1993)

73% (1967)

71% (1987)

61% (1962)

62% (1984)

52% (1969)

0% (1987)

0% (1983)

0% (2000)

50% (1968)

46% (1960)

51% (1955)

63% (1984)

56% (1960)

50% (1988)