59% (2012)

68% (2015)

77% (2005)

56% (2010)

78% (2006)

65% (2010)

52% (2006)

70% (2011)

60% (2007)

64% (2004)

55% (2007)

70% (2009)

70% (2013)

69% (2004)

69% (2008)

55% (2013)

70% (2013)

60% (2006)

65% (2006)

0% (2013)