61% (2009)

80% (2007)

79% (2007)

81% (2007)

58% (2005)

64% (2008)

46% (2009)

68% (2008)

58% (2008)

63% (2010)

64% (2011)

64% (2009)

59% (2010)

69% (2006)

62% (2011)

55% (2009)

64% (2007)

66% (2008)

68% (2007)

71% (2009)