72% (2003)

75% (2000)

78% (2000)

66% (2003)

58% (2003)

61% (2001)

56% (2002)

65% (2002)

53% (1999)

61% (2002)

60% (2002)

52% (2000)

65% (2001)

47% (2001)

65% (1999)

63% (2003)

60% (2004)

76% (1997)

60% (1999)

51% (2001)