74% (2006)

64% (2010)

57% (2013)

50% (2009)

54% (2009)

17% (2007)

56% (2013)

55% (2011)

59% (2010)

57% (2012)

55% (2009)

50% (2010)

70% (2010)

66% (2002)

65% (2004)

68% (2012)

50% (2006)