A recent report from the United States Government Accountability Office (GAO) analysing Iraq's revenue and expenditure data and U.S. expenditures in Iraq found the following:
From 2005 through 2007, the Iraqi government generated an estimated $96
billion in cumulative revenues, of which crude oil export sales accounted
for about $90.2 billion, or 94 percent. For 2008, the GAO estimates that Iraq could
generate between $73.5 billion and $86.2 billion in total revenues, of which
oil exports will account for between $66.5 billion to $79.2 billion.