0% (2003)

10% (2009)

0% (2007)

32% (2009)

30% (2007)

44% (2006)

73% (2011)

80% (2004)

0% (2007)

10% (2008)

20% (2010)

0% (2011)

0% (2007)

10% (2006)

43% (2004)

20% (2009)

0% (2009)

20% (2007)

20% (2009)

20% (2005)