67% (2011)

57% (2008)

64% (2009)

65% (2009)

53% (2006)

76% (2010)

67% (2008)

63% (2010)

67% (2007)

72% (2009)

73% (2006)

71% (2010)

59% (2010)

73% (2009)

69% (2004)

45% (2009)

59% (2010)

59% (2008)

67% (2008)

64% (2004)