40% (2007)

20% (2006)

0% (2006)

0% (2005)

20% (2007)

60% (2006)

0% (2004)

0% (2003)

0% (2003)

57% (2005)

30% (2002)

25% (2008)

0% (2000)

0% (2010)

20% (2006)

40% (2008)

29% (2008)

50% (2006)

20% (2007)

15% (2004)