68% (2004)

69% (2008)

52% (2002)

66% (2005)

51% (2005)

72% (2005)

61% (2006)

66% (2007)

53% (2007)

62% (2003)

64% (2003)

64% (2008)

68% (2007)

60% (2005)

62% (2003)

64% (2006)

55% (2005)

42% (2008)

54% (2005)

76% (2006)