82% (2016)

70% (2014)

60% (2015)

60% (2009)

63% (2008)

65% (2012)

64% (2015)

62% (2011)

80% (2016)

62% (2010)

73% (2017)

54% (2014)

55% (2012)

61% (2007)

57% (2009)

60% (2016)

73% (2013)

57% (2011)

62% (2016)

64% (2003)