We don't know it. We are just trying to find our best estimator for it. So actually, what I'm going to do here is actually just say is roughly, and just to show that we don't even have that level of accuracy, I'm going to say roughly 95%. We're reasonably confident that it's about 95% because we're using this estimator that came out of our sample. And if the sample is really skewed, this is going to be a really weird number. So this is why we just have to be a little bit more exact about what we're doing. But this is a tool for at least saying how good is our result.