70% (1986)

70% (1986)

50% (1998)

60% (1991)

90% (1990)

80% (1997)

0% (1995)

0% (1994)

89% (1986)

64% (1990)

65% (1984)

78% (1996)

70% (1989)

0% (1985)

70% (1987)

0% (1991)

70% (1987)

70% (1987)

70% (1988)

0% (1986)