gas prices and capital raising, page-2

What's the prognosis of the Henry Hub gas price in the longer term - say 2 to 4 year outlook?

Are these supply deficits problems likely to be resolved, or are they permanent?

Additionally, what has changed since the early/mid 90s (when Henry Hub was almost always below $3) and now, to cause a gradual increase in the price over the last 3 years to its current level above $7?

Don't get me wrong...i am not complaining ;) I would just like to know how sustainable current prices are.