75% (2001)

64% (2004)

67% (2001)

62% (2008)

71% (2006)

63% (2005)

78% (2004)

68% (2011)

76% (2005)

44% (2002)

55% (2006)

56% (2003)

66% (2007)

49% (2003)

55% (2002)

65% (2004)

82% (2005)

66% (2010)

63% (2009)

61% (2003)