It's a bit of both, and I'll speak from the perspective of information coming from Statistics Canada.
At the Canadian Energy Research Institute, we use a lot of Statistics Canada data. We use it for our economic models for input and output analysis. There's a lot of information behind those tables, and it's very vital that the information be gathered, vetted, and then put into the tables themselves. At the national level, you can get a table for last year's information probably 18 months after the end of the year, maybe a year. The real meat of the matter is understanding the product and material flows between the provinces and the details behind that, and that takes three to four years for that same year. Right now we're doing analyses on interprovincial and international flows at the provincial level that are from 2013, and we just got those. We were using 2011 data until very recently.
When we're talking about some significant changes in the electricity system, the oil system, or the natural gas system, it will take a long time for those models to be put together. Once they're run by analysts, they're often broken, because it's not always right the first time. It might take another six months for them to be useful, so you could be looking at five years before you've got good analytical tools to tell you what happened five years ago in a different situation.