10% (1997)

70% (1999)

60% (1999)

60% (2000)

0% (1995)

68% (1995)

70% (1999)

58% (1998)

0% (1994)

54% (1999)

100% (1985)

66% (1996)

0% (1995)

65% (1997)

50% (1989)

33% (1999)

0% (1997)

55% (1996)

61% (1999)

0% (1994)