Among the findings:

The United States has spent $751 billion in Iraq to date (through the end of FY2010) with an addition $51 billion planned for FY2011. (Congressional Research Service)

4733 foreign troops have been killed: 4415 American, 179 British and 139 from other countries (iCasualties)

107,000-116,000 Iraqis have been killed, 9,537 of them soldiers (as of June 29, 2010). Though, as the graph below shows, civilian casualties have been decreasing (IraqBodyCount.org and Brookings Institution)