49% (2005)

64% (1982)

50% (1976)

51% (2005)

10% (1976)

63% (1988)

58% (1982)

62% (1982)

52% (1980)

60% (1985)

43% (1980)

0% (1981)

60% (1991)

100% (1976)

60% (1981)

60% (1991)

10% (1980)

70% (1976)

45% (1979)

56% (1978)