60% (2010)

73% (2006)

62% (2008)

65% (2009)

71% (2007)

63% (2013)

63% (2009)

62% (2008)

62% (2008)

72% (2011)

63% (2008)

61% (2012)

63% (2010)

63% (2012)

66% (2012)

63% (2008)

59% (2011)

60% (2011)

63% (2007)

67% (2009)