74% (2006)

73% (2005)

65% (2008)

69% (2005)

53% (2006)

49% (2010)

62% (2011)

63% (2005)

62% (2011)

66% (2007)

61% (2006)

64% (2011)

58% (2006)

62% (2005)

55% (2010)

60% (2007)

61% (2006)