77% (2005)

63% (2006)

62% (2005)

68% (2004)

68% (2010)

64% (2010)

75% (2008)

58% (2006)

64% (2006)

53% (2007)

66% (2002)

59% (2004)

73% (2011)

80% (2011)

67% (2006)

69% (2006)

62% (2011)

67% (2004)

42% (2009)

74% (2007)