Our colleagues at the Correctional Service of Canada use a variety of strategies similar to what you've described, looking at past experience, to forecast the impact. However, as my colleague indicated in this case, there will not be any impact for the next 15 years.
In terms of the incarceration costs, again, if colleagues from Correctional Services are appearing, they would be better placed than we are to indicate how they deal with that. Their planning is always more than just the numbers. There are so many factors that come into play about where people are housed and the programming they need and so on.