75% (2001)

64% (2004)

63% (2005)

68% (2001)

82% (2005)

56% (2003)

71% (2006)

49% (2003)

55% (2002)

62% (2008)

45% (2002)

61% (2003)

70% (1998)

67% (2011)

76% (2005)

66% (2010)

55% (2006)

64% (2004)

55% (2005)

63% (2009)