82% (2007)

77% (2009)

70% (2005)

60% (2011)

77% (2008)

81% (2013)

80% (2004)

50% (2008)

42% (2015)

73% (2008)

80% (2015)

70% (2001)

70% (2015)

70% (2007)

73% (2015)

70% (2014)

66% (2016)

63% (2011)

65% (2010)

61% (2014)