63% (2006)

77% (2005)

68% (2004)

62% (2005)

68% (2010)

66% (2002)

74% (2008)

64% (2010)

74% (2011)

59% (2004)

68% (2004)

64% (2006)

67% (2006)

45% (2007)

58% (2006)

80% (2011)

45% (2009)

62% (2011)

74% (2007)

53% (2007)