75% (2011)

67% (2010)

63% (2012)

60% (2012)

73% (2010)

69% (2010)

71% (2013)

58% (2012)

59% (2009)

63% (2009)

46% (2011)

60% (2010)

67% (2011)

67% (2009)

57% (2011)

66% (2009)

55% (2009)

59% (2008)

60% (2011)

65% (2011)