As always, the years supply is (almost) always given as if there were no change in the consumption rate. It is starting to dawn on some people that the exponential consumption time very quickly shortens the "actual" reserves left if on considers growth.

For example, that 200-250 year US reserve that is often quoted lasts but 80-87 years if you consider a growth rate of ~2.2% per year. Throw in a dramatic coal-to-liquids program and it's easy to demonstrate that the US coal reserves quickly drop to a couple of decades.

Yes, it's all "a blink of the eye" in time.