68% (2006)

61% (2006)

52% (2002)

52% (2005)

64% (2003)

64% (2007)

53% (2007)

37% (2004)

71% (2007)

64% (2005)

53% (2007)

61% (2007)

63% (2006)

50% (2004)

50% (2005)

66% (2007)

60% (2003)

72% (2005)

68% (2006)

56% (2007)