In this May 6, 2010, photo, Sgt. Kevin McCulley stands in front of one panel in a monument at Forward Operating Base Warrior in Kirkuk bearing the names of more than 4,400 U.S. service members killed in Iraq since the 2003 U.S. invasion. (Maya Alleruzzo/AP)

The attack was one of a string of violent attacks in Iraq on Monday, including an incident in which a suicide bomber blew himself up at the gate of former Iraqi president Saddam Hussein’s presidential palace in Tikrit. Eleven were killed and 20 wounded by that bombing.

As the Jan. 1, 2012, deadline that requires American forces out of Iraq approaches, we break down the numbers in Iraq since the conflict began:

5: Number of U.S. soldiers wounded in the attack that killed five others Monday, according to CNN.

29: Number of Americans killed in Iraq in 2011, according to

486: Number of Americans that died in Iraq in 2003, the year the war in Iraq began, according to

1 ,135: Number of U.S. troop amputees as of April 2011, according to military news site Stars and Stripes.

904: Number of Americans that died in Iraq in 2007, the year of the greatest number of casualties, according to

4,459: Total number of U.S. troops killed in Iraq, according to

32,074: Number of American forces wounded, 20 percent of whom are serious brain or spinal injuries, as of April 2011, according to the Brookings Institution's Iraq Index.

46,000: Number of American forces still in Iraq, according to the AP.

100,000+: Estimated number of Iraqi civilian deaths, according to database Iraq Body Count.

782 billion: Spent and approved dollars for war-spending in Iraq, according to research organization Cost of War.

9 billion: Dollars lost and unaccounted for in Iraq as of 2010, according to Russia Times.

500 billion: Cost of medical care and disability compensation for Iraq war veterans over their lifetimes, according to the House Committee on Veterans Affairs.

3 trillion: Dollars of estimated total cost of the war. according to military news site Stars and Stripes.