82% (1985)

77% (1998)

80% (1985)

60% (1984)

50% (1990)

42% (1988)

52% (1985)

60% (2002)

55% (1988)

0% (1977)

14% (1983)

45% (1983)

43% (1990)

0% (1979)

0% (1977)

50% (1985)

0% (1982)

0% (1988)

63% (1998)

60% (1985)