37% (1996)

40% (1997)

40% (1997)

25% (1997)

61% (1998)

48% (1999)

28% (1998)

10% (1995)

10% (1996)

0% (1999)

30% (2000)

10% (1996)

0% (1998)

44% (1997)

15% (1996)

10% (1997)

20% (1996)

30% (2000)

10% (1996)

32% (1998)