82% (2007)

77% (2009)

70% (2005)

77% (2008)

60% (2011)

81% (2013)

80% (2015)

42% (2015)

80% (2004)

73% (2015)

73% (2008)

66% (2016)

70% (2001)

70% (2007)

63% (2011)

72% (2013)

72% (2001)

50% (2008)

61% (2014)

79% (2009)