60% (2010)

70% (2010)

60% (2010)

45% (2009)

72% (2009)

59% (2009)

50% (2008)

70% (2007)

67% (2008)

68% (2008)

70% (2007)

64% (2004)

58% (2006)

75% (2005)

66% (2003)

66% (2003)

65% (2009)

52% (2007)

66% (2011)

61% (2011)