50% (1994)

0% (1995)

60% (1996)

20% (1994)

40% (1994)

0% (1994)

36% (1994)

59% (1998)

0% (1993)

30% (1994)

66% (1995)

0% (1995)

72% (1998)

60% (1995)

70% (1994)

39% (1996)

0% (1994)

0% (1994)

0% (1996)

10% (1994)