61% (2007)

74% (2009)

59% (2012)

56% (2010)

74% (2012)

69% (2009)

64% (2004)

65% (2010)

63% (2006)

59% (2012)

64% (2007)

0% (2013)

65% (2006)

55% (2013)

56% (2007)

70% (2009)

52% (2006)

54% (2008)

60% (2013)

78% (2006)