Here's Why You Don't Need Wikileaks To Know That Saudi Oil Reserves Are Overstated

Saudi Arabia tells us that they have lots of oil, but if we look at graphs of their historical production, there is nothing that looks like an upward trend. In fact, recent production is lower than it was in the late 1970s and early 1980s. This is a graph of Saudi oil production, consumption, and amount of net exports, from Energy Exports Databrowser.

Exports, in green, are down because Saudi Arabia is consuming more and more of its own oil, so there is less available for others. This graph doesn't fit well with what we have been told.