82% (1985)

77% (1998)

0% (1979)

0% (1977)

60% (2002)

50% (1985)

42% (1988)

60% (1984)

45% (1983)

14% (1983)

50% (1990)

0% (1975)

55% (1988)

52% (1985)

43% (1990)

64% (1998)

60% (1984)

0% (1975)

0% (1988)

80% (1985)