54% (2008)

55% (2010)

52% (2006)

69% (2012)

64% (2012)

59% (2012)

53% (2010)

66% (2008)

57% (2007)

60% (2011)

70% (2011)

63% (2009)

60% (2012)

62% (2010)

30% (2009)

67% (2013)

53% (2008)

66% (2010)

67% (2006)

57% (2009)