10% (2007)

25% (2005)

0% (2006)

50% (2003)

0% (2007)

10% (2006)

0% (2005)

10% (2002)

0% (2006)

0% (2006)

10% (2005)

0% (2006)

10% (2004)

30% (2006)

0% (2007)

20% (2003)

10% (2006)

23% (2005)

25% (2003)

20% (2006)