80% (2007)

81% (2007)

78% (2007)

58% (2010)

63% (2010)

59% (2008)

63% (2009)

61% (2009)

68% (2006)

68% (2008)

71% (2009)

62% (2012)

64% (2011)

58% (2005)

54% (2012)

54% (2007)

69% (2008)

46% (2009)

54% (2009)

70% (2010)