81% (2004)

61% (2009)

66% (2011)

60% (2010)

73% (2003)

64% (2009)

66% (2010)

53% (2004)

52% (2006)

69% (2007)

52% (2006)

61% (2004)

62% (2005)

62% (2008)

59% (2008)

56% (2007)

47% (2011)

52% (2007)

0% (2006)

77% (2006)