78% (1983)

70% (1980)

68% (1982)

49% (2000)

41% (1984)

78% (1981)

66% (1984)

62% (1980)

56% (1981)

69% (1979)

63% (1981)

45% (2007)

71% (1981)

61% (1982)

62% (1981)

50% (1985)

57% (1983)

0% (1982)