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Illegal ivory trade continues to grow TRAFFIC warns that 2011 has seen a record number of large ivory seizures globally,reflecting the sharp rise in illegal ivory trade underway since 2007. Although official confirmation of the volume of ivory involved in some cases has not yet been registered,what is clear is the dramatic increase in the number of large-scale seizures,over 800 kg in weight,that have taken place in 2011-at least 13 of them.