74% (2006)

73% (2005)

65% (2008)

69% (2005)

48% (2009)

62% (2011)

66% (2007)

52% (2006)

65% (2011)

62% (2005)

58% (2006)

62% (2011)

63% (2005)

60% (2006)

60% (2006)

54% (2010)

61% (2007)