20% (2003)

68% (2014)

23% (2013)

50% (2011)

10% (2009)

34% (2002)

0% (2009)

46% (2002)

20% (2007)

30% (2005)

0% (2007)

15% (2002)

78% (2003)

60% (2007)

30% (2003)

20% (2007)

68% (2006)

57% (2006)

45% (2014)

68% (2006)