It's hard to quantify. As I said, universities are spending more and more on other forms of material and copyright-protected material, so the actual savings, I think, are minimal. I think it's shifting.
I've used an analogy to say that we used to all pay $50 a month for our land line and now we pay $50 a month for our cell line. We're not saving money; we're just putting the money into different ways of doing the same thing.