It's a little bit hard. It's an estimate that we try to come up with. We know roughly what the ongoing work is, for example, on the environmental front and how much it's costing us. Some of them we can cost. Some of it is a forecast of what could come and how much we will need per year. It's a number that's partly based on numbers we know, partly on an estimate.
On February 24th, 2016. See this statement in context.