I would just say, “No, but”. That is, given the complexity of this and given how it will affect different regions and different industries, what you have is really a collection of prognostications, but no single number.
The only thing I would add is that very early on, when it was enormously unpopular to think about or talk about the word “adaptation”, we recognized that with a warmer climate there would be transitional changes; we believed they would be quite profound, but we also believed there would be benefits as well as losses.