60% (2006)

59% (2005)

50% (2004)

62% (2004)

42% (2008)

71% (2007)

72% (2005)

66% (2005)

51% (2007)

53% (2007)

52% (2002)

60% (2005)

63% (2006)

37% (2004)

59% (2005)

52% (2005)

68% (2006)

66% (2007)

53% (2007)

65% (2007)