 
 <translate> To answer this question, we should know that: Since that designation, Duke has won two additional national titles in 2010 and 2015.
So, the final answer is 2015. <ibo> Iji zaa ajụjụ a, anyị kwesịrị ịma nke a: Kemgbe a họpụtara ya, Duke enwetakwuola nturuugo mba abụọ ọzọ n'afọ 2010 na 2015. Ya mere, azịza ikpeazụ bụ 2015. 