30% (2006)

20% (2006)

0% (2005)

10% (2006)

20% (2006)

35% (2006)

60% (2006)

20% (2004)

0% (2006)

34% (2003)

60% (2004)

10% (2004)

10% (2004)

50% (2003)

10% (2006)

55% (2006)

20% (2002)

20% (2006)

10% (2006)

20% (2004)