Again, that is not for us to determine. Our mandate is very clear; we investigate occurrences. There are regulators, other bodies, other government agencies, that have the responsibility to look at energy products being produced, imported and exported, and to do the oversight.
In terms of pipeline activity, the number of occurrences has been relatively stable, it has dropped a little in the last few years. The quantities spilled when there are occurrences are fairly small, as was mentioned earlier, however, in rail transportation, the data is changing.
If you refer to the Fraser study of 2015, since then, there have been a number of improvements to rail safety and we're seeing some changes in the numbers. n a few weeks, we'll be releasing our formal statistics for 2018 and you'll see in there more current data that could be used by the Fraser Institute and others to do the analysis that you're talking about.