From the article of the same name from the Business Insider:
The Iraq War was so messy and costly that the best attempt to assess the sheer damage is through numbers.
We drew from sources including various news reports, The Brookings Institute 's Iraq Index, and the Costs of War Project to document money and blood spent on the war.
189,000: Direct war deaths, which doesn't include the hundreds of thousands more that died due to war-related hardships.
4,488: U.S. service personnel killed directly.
32,223: Troops injured (not including PTSD).
134,000: Civilians killed directly.
655,000: Persons who have died in Iraq since the invasion that would not have died if the invasion had not occurred.
150: Reporters killed.
2.8 million: Persons who remain either internally displaced or have fled the country.
$1.7 trillion: Amount in war expenses spent by the U.S. Treasury Department as through Fiscal Year 2013.
$5,000: Amount spent per second.
$350,000: Cost to deploy one American military member.
$490 billion: Amount in war benefits owed to war veterans.
$7 trillion: Projected interest payments due by 2053 (because the war was paid for with borrowed money).
$20 billion: Amount paid to KBR, contractor responsible for equipment and services.
$3 billion: Amount of KBR payments Pentagon auditors considered "questionable."
$60 billion: Amount paid for reconstruction, (which was ruled largely a waste due to corruption and shoddy work.)
$4 billion: Amount owed to the U.S. by Iraq before the invasion.
$12 billion: Cost per month of the war by 2008.
$7 billion: Amount owed to Iraq by the U.S. after the war (mostly due to fraud).
$20 billion: Annual air conditioning cost.
Missing: $546 million in spare parts; 190,000 guns, including 110,000 AK-47s.
40 percent: Increase in Iraqi oil production.
$5 billion: Revenue from Iraqi oil in 2003.
$85 billion: Revenue from Iraqi oil in 2011.
$150 billion: Amount oil companies are expected to invest in oil development over the next decade.
$75 billion: Approximate amount expected to go to American subcontracting companies, largest of all Halliburton.
0: Nuclear Weapons of Mass Destruction found (though a bunch of chems were discovered).
Perhaps most importantly, this list doesn't account for the emotional damage caused to service members and their families as well as the destruction to the homes, social fabric, and psyche of the Iraqi people.
For some visual accounts, check out Buzzfeed's Iraq war in front pages and Time's Iraq war in images.Read more: http://www.businessinsider.com/iraq-war-facts-numbers-stats-total-2013-3#ixzz3bm3Zc9mJ
So yes, next time someone says "You're still blaming George W. Bush", be sure to tell them they're right. We sure as hell are.