75% (2011)

62% (2014)

49% (2008)

67% (2010)

53% (2006)

52% (2014)

47% (2014)

62% (2012)

59% (2007)

56% (2007)

56% (2011)

44% (2012)

60% (2013)

49% (2012)

43% (2016)

71% (2016)

48% (2006)

64% (2011)

68% (2013)

51% (2010)