81% (2004)

61% (2009)

53% (2004)

60% (2010)

64% (2009)

74% (2003)

62% (2008)

66% (2010)

51% (2006)

66% (2011)

69% (2007)

53% (2006)

61% (2004)

56% (2007)

59% (2008)

77% (2006)

62% (2005)

53% (2007)

47% (2011)

0% (2006)