64% (2004)

75% (2001)

63% (2005)

67% (2001)

76% (2005)

62% (2008)

78% (2004)

49% (2003)

45% (2002)

64% (2004)

55% (2002)

71% (2006)

61% (2003)

64% (2004)

56% (2003)

55% (2006)

40% (1998)

82% (2005)

66% (2007)

48% (2007)