That’s what Y-Combinator founder Paul Graham said, as the accelerator opens up applications for its new class. That’s the average of all of YC’s 464 alumni companies. All told, they have raised about $1.5 billion, though that figure is skewed by more high profile alums like Dropbox and Airbnb, who have rasied about 30 percent of the entire amount. [Source: TechCrunch]