Three things I'd suggest Stuart:

1) The expected time to ramp to peak production would be useful, some will be slower than others.

2) Make sure you make regular offline copies, you have no idea when an 'editor' might take exception and delete it. They can be capricious, not to say uncontrolled.

3) A database or XML shaped version would be useful, particularly if it could be incorporated into the overall scheme of things and link dynamically.

On 1), there is a peak year field (which would allow one to at least linearly interpolated), but the data is not available for most fields.

On 2), thanks for the tip.

On 3), there are no plans to do this at present, but we are working to preserve the property that the tables cut and past cleanly into spreadsheets, etc, for analysis.

I'm working on a Perl script that will parse the page and produce a csv file.

Great.

XML for preference (over CSV). Lots of nice benefits for processing and extension.

Many fields seem to ramp to a peak level over a period of a few months to a few years, then maintain a plateau. Its possible to make guesstimates (they are inherent in most predictions, as you know) but having a considered view of that shape is extremely useful. Best would be a year by year production shape.

If I ever have a spare moment, I'll see what I can do. I've got half of it.

In terms of analysis - yes, we need to explore the various estimation methodologies one might use. In terms of the Wiki page, the content needs to be verifiable - so there must be some attribution to some source (generally ultimately the operator of the field) that stated the peak date.

"Make sure you make regular offline copies, you have no idea when an 'editor' might take exception and delete it."

The Wikipedia software keeps a record of every edit made, so it is a simple matter to revert to any previous version. All material can always be recovered.

Link:
http://en.wikipedia.org/wiki/Help:Reverting

One thing the contributors might want to do is put the page on their "watch list." Every time you log in, you can see what changes have been made since your last visit.

Link:
http://en.wikipedia.org/wiki/Help:Watching_pages

The problem is the editors have a lot of power to lock, change, delete and otherwise kill any posting. Reversion is only any use if they don't get involved.

I wouldn't want to rely on Wikipedia as the sole source. If its valuable, back it up.

Good advice.