79% (1983)

70% (1980)

62% (1980)

69% (1982)

55% (1981)

61% (1982)

48% (2000)

79% (1981)

45% (2007)

67% (1984)

62% (1981)

69% (1979)

71% (1981)

64% (1981)

42% (1984)

57% (1983)

0% (1982)

50% (1985)