 <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. <yor> Lati dahun ibeere ti o wa loke, gbolohun ti o yẹ ni: Ti a ṣẹda nipasẹ Dick Wolf, jara naa ṣe iṣafihan lori NBC ni Oṣu Kẹsan Ọjọ 20, Ọdun 1999, bi jara keji ni aṣeyọri Wolf's Ofin & Aṣẹ franchise. Nítorí náà ìdáhùn náà ni 1999. 