68% (2005)

70% (2003)

55% (2005)

71% (2011)

76% (2012)

63% (2006)

65% (2002)

64% (2010)

76% (2006)

63% (2008)

0% (2009)

70% (2010)

58% (2006)

56% (2003)

62% (2005)

64% (2005)

60% (2010)

52% (2005)

68% (2002)

69% (2005)