75% (1998)

40% (1999)

40% (2003)

70% (1998)

27% (2002)

20% (2003)

50% (1998)

30% (2001)

45% (2002)

30% (2001)

27% (2002)

15% (2002)

20% (2001)

20% (2002)

10% (2003)

20% (2002)

10% (2002)

0% (2002)

0% (2003)

30% (2001)