67% (1987)

53% (1988)

62% (1989)

58% (1990)

69% (1990)

60% (1988)

38% (1988)

59% (1988)

52% (1990)

70% (1987)

50% (1992)

10% (1986)

68% (1992)

51% (1991)

56% (1986)

77% (2004)

0% (2005)

0% (1989)

0% (1992)

0% (1993)