I agree and I always do keep that in mind. In fact these levels are going to make a lot of recoverable reserves of some previously unrecoverable hydrocarbons like oil shale.
International Energy Outlook 2007
Chapter 3 - Petroleum and Other Liquids Fuels
http://www.eia.doe.gov/oiaf/ieo/oil.html
Energy Information Administration, statistical agency of the U.S. Department of Energy