Between 100,000 and 300,000 barrels a day of Iraq's declared oil production over the past four years is unaccounted for and could have been siphoned off through corruption or smuggling, according to a draft American government report.
Using an average of $50 a barrel, the report said the discrepancy was valued at $5 million to $15 million daily.
The report does not give a final conclusion on what happened to the missing fraction of the roughly two million barrels pumped by Iraq each day, but the findings are sure to reinforce longstanding suspicions that smugglers, insurgents and corrupt officials control significant parts of the country’s oil industry.
So.... 5 - 15% of all the oil Iraq has produced has vanished. Given the chaos over there, it's a safe bet that the "declared oil production" is being underestimated by sticky-fingered companies and officials. But even if you take the most conservative estimates of production and loss, that comes to about $5,325,000,000.