37% (2006)

70% (2012)

45% (2011)

0% (2002)

49% (2008)

65% (2005)

47% (2007)

0% (2001)

43% (2010)

56% (2006)

0% (2008)

69% (2010)

0% (2000)

0% (2007)

0% (2011)

0% (1999)

45% (2007)

70% (1993)

60% (2011)

48% (2008)