64% (2004)

75% (2001)

62% (2008)

45% (2002)

63% (2005)

67% (2001)

47% (2006)

81% (2005)

71% (2006)

61% (2003)

76% (2005)

49% (2003)

55% (2006)

55% (2002)

43% (2005)

64% (2004)

56% (2003)

49% (2007)

57% (2005)

66% (2010)