71% (2004)

62% (2003)

72% (2001)

63% (2002)

68% (2003)

65% (2004)

69% (2005)

63% (2005)

73% (2005)

65% (2003)

56% (2005)

51% (2001)

65% (2004)

65% (2002)

50% (2005)

72% (2005)

60% (2002)

44% (2002)

58% (2003)

51% (2004)