69% (2008)

64% (2010)

60% (2010)

59% (2012)

66% (2008)

62% (2014)

72% (2007)

59% (2010)

47% (2013)

56% (2009)

68% (2007)

51% (2010)

67% (2008)

57% (2010)

59% (2014)

57% (2011)

62% (2013)

62% (2011)

57% (2008)

66% (2009)