100% (1987)

43% (1984)

62% (1990)

0% (1986)

70% (1986)

65% (1986)

40% (1987)

80% (1991)

78% (1990)

70% (1989)

63% (1986)

0% (1989)

60% (1986)

80% (1985)

60% (1987)

0% (1989)

60% (1990)

50% (1991)

0% (1991)

60% (1990)