40% (1999)

15% (2001)

30% (2001)

20% (2002)

50% (2003)

40% (2003)

10% (2003)

15% (2002)

27% (2002)

20% (2001)

27% (2001)

0% (2002)

50% (1998)

30% (2001)

0% (2003)

27% (2002)

30% (2001)

75% (1998)

20% (2002)

0% (1999)