50% (1979)

88% (1998)

70% (1995)

80% (1995)

0% (1986)

100% (1987)

0% (1980)

0% (1997)

0% (1999)

0% (1980)

0% (1979)

50% (1997)

90% (1994)

0% (1980)

0% (1979)

0% (1997)

60% (1985)

73% (1994)

75% (1996)

0% (1979)