75% (2011)

67% (2010)

45% (2016)

74% (2016)

47% (2014)

49% (2008)

60% (2013)

63% (2012)

62% (2014)

55% (2007)

49% (2012)

56% (2010)

56% (2011)

80% (2012)

59% (2007)

71% (2006)

59% (2009)

53% (2006)

53% (2006)

56% (2007)