I'm led to understand the majority of money tends to come at the start and end of fundraising efforts for these things. Though I can't recall where I heard it. Chris Taylor talking about the funraising effort for GPG I think -
- Ah, there we go, at around 3 minutes in. U shaped distribution for Proj Eternity -
[Very good interview, by the way, if you haven't seen it and don't already know a bit about game companies. Really feel sorry for the guy.]
Anyhoo. Not that I'm saying this is a U shape, but I suspect you're going to need comparison to similar products to say too much of meaning.