74% (2011)

73% (2018)

77% (2013)

41% (2014)

80% (2012)

53% (2013)

72% (2009)

76% (2012)

80% (2008)

38% (2015)

52% (2012)

80% (2007)

90% (1998)

75% (2009)

35% (2008)

84% (2009)

79% (2011)

64% (2006)

62% (2003)

77% (2007)