10% (2004)

60% (2006)

20% (2004)

25% (2003)

10% (2005)

10% (2002)

10% (2004)

30% (2005)

10% (2005)

60% (2006)

23% (2005)

44% (2006)

27% (2004)

35% (2006)

10% (2003)

0% (2004)

25% (2005)

20% (2006)

15% (2006)

40% (2006)