78% (2011)

66% (2013)

66% (2012)

43% (2009)

79% (2013)

73% (2020)

55% (2011)

47% (2012)

70% (2014)

67% (2015)

63% (2008)

61% (2010)

56% (2013)

41% (2009)

70% (2009)

60% (2010)

38% (2012)

62% (2016)

53% (2013)

56% (2016)