78% (2007)

82% (2009)

82% (2012)

67% (2008)

78% (2015)

75% (2008)

71% (2016)

72% (2012)

63% (2008)

67% (2008)

78% (2010)

53% (2008)

80% (2007)

75% (2006)

74% (2010)

66% (2014)

81% (2016)

63% (2005)

52% (2006)

71% (2014)