74% (2006)

61% (2011)

73% (2005)

49% (2010)

64% (2008)

58% (2006)

64% (2011)

61% (2011)

69% (2005)

65% (2007)

52% (2006)

62% (2005)

62% (2005)

60% (2007)

60% (2006)

54% (2010)

61% (2006)