68% (2004)

67% (2005)

75% (2004)

67% (2002)

53% (2003)

61% (2001)

80% (2004)

58% (2006)

43% (2006)

52% (2000)

54% (2001)

66% (2001)

70% (2005)

51% (2001)

63% (2005)

61% (2006)

64% (2002)

70% (2005)

49% (2005)

68% (2005)