72% (2005)

43% (2001)

66% (2006)

68% (1999)

61% (2001)

76% (2002)

65% (1999)

51% (1998)

61% (2002)

62% (2002)

61% (2003)

60% (2000)

68% (2003)

67% (2002)

74% (2005)

53% (2002)

52% (2002)

61% (2002)

63% (1999)

45% (2003)