 
 <translate> To answer the above question, the relevant sentence is: Created by Dick Wolf, the series premiered on NBC on September 20, 1999, as the second series in Wolf's successful Law & Order franchise. So the answer is 1999. <ibo> Iji zaa ajụjụ a dị n'elu, ahịrịokwu dị mkpa bụ: Onye Dick Wolf kere, usoro ahụ bidoro na NBC na Septemba 20, 1999, dị ka usoro nke abụọ na Wolf's Law & Order franchise. Ya mere azịza ya bụ 1999. 