59% (2005)

64% (2003)

52% (2005)

65% (2006)

64% (2003)

62% (2003)

63% (2005)

37% (2004)

51% (2007)

62% (2004)

67% (2006)

50% (2004)

63% (2006)

60% (2005)

68% (2007)

62% (2006)

68% (2006)

64% (2007)

61% (2007)

66% (2005)