55% (2009)

73% (2007)

66% (2013)

64% (2012)

58% (2012)

58% (2011)

65% (2010)

67% (2011)

63% (2009)

71% (2008)

45% (2016)

68% (2009)

54% (2009)

70% (2010)

56% (2012)

50% (2011)

63% (2012)

65% (2010)

59% (2006)

53% (2015)