30% (2006)

20% (2004)

60% (2006)

10% (2004)

0% (2006)

10% (2002)

15% (2004)

50% (2003)

10% (2004)

20% (2006)

0% (2006)

10% (2007)

10% (2007)

10% (2005)

20% (2003)

25% (2005)

30% (2005)

40% (2006)

34% (2003)

20% (2002)