63% (2006)

77% (2005)

62% (2005)

68% (2010)

64% (2010)

68% (2004)

75% (2008)

66% (2002)

64% (2006)

62% (2011)

58% (2006)

73% (2011)

80% (2011)

59% (2004)

53% (2007)

68% (2004)

69% (2006)

66% (2006)

74% (2007)

45% (2009)