I want to know the answer to the following question:
How many series have aired since 2011?
All the background I'm provided with is that "As of 2011, there have been six series — Digimon Adventure, the follow-up sequel Digimon Adventure 02, Digimon Tamers, Digimon Frontier, Digimon Data Squad and Digimon Fusion.". Is that enough to answer the question?