22% (2007)

15% (2002)

23% (2006)

30% (2007)

60% (2006)

0% (2012)

45% (2002)

0% (2004)

15% (2008)

63% (2001)

34% (2003)

33% (2002)

35% (2002)

50% (1999)

0% (2005)

0% (2006)

35% (2010)

32% (2005)

70% (2011)

18% (2010)