68% (2004)

75% (2004)

67% (2005)

80% (2004)

62% (2001)

58% (2006)

43% (2006)

53% (2003)

52% (2001)

64% (2002)

63% (2001)

52% (2000)

62% (2004)

66% (2001)

49% (2005)

62% (2002)

54% (2001)

60% (2006)

70% (2005)

66% (2000)