75% (2012)

70% (2003)

68% (2005)

71% (2011)

76% (2006)

55% (2005)

64% (2005)

63% (2006)

52% (2005)

70% (2010)

63% (2008)

0% (2009)

68% (2002)

69% (2005)

65% (2002)

57% (2010)

62% (2005)

56% (2003)

67% (2005)

58% (2006)