In your average piece of animation, how many of the frames are key frames drawn by the animator, and how many are drawn by an inbetweener?
Even a small difference would have a huge impact; for example, having about a third of the frames be keys is a little over half the work for the animators compared to having half the frames be key frames, so this would obviously have a huge impact on budget, as fewer keys means you don't need as many key animators. I feel like a third or a fourth of frames being keys is probably average, but I haven't been able to find anything to support or debunk this hunch.
Anyone working in the anime industry, or familiar enough with it to give me a ballpark?