62% (2014)

63% (2010)

67% (2008)

75% (2010)

64% (2012)

65% (2013)

66% (2011)

53% (2011)

57% (2015)

59% (2008)

61% (2007)

56% (2011)

52% (2008)

60% (2009)

56% (2006)

53% (2005)

43% (2006)

66% (2010)

46% (2008)

62% (2009)