69% (2004)

62% (2013)

65% (2008)

69% (2011)

67% (2013)

60% (2016)

57% (2012)

60% (2007)

67% (2010)

57% (2015)

52% (2014)

49% (2016)

68% (2002)

68% (2016)

52% (2013)

49% (2009)

54% (2014)

45% (2015)

45% (2013)

59% (2015)