U.S. TROOP LEVELS:
October 2007: 170,000 at peak of troop buildup.
Dec. 31, 2009: 112,000.
Confirmed U.S. military deaths as of Jan. 4, 2009: at least 4,370.
Confirmed U.S. military wounded (hostile) as of Jan. 4, 2010: 31,613.
Confirmed U.S. military wounded (non-hostile, using medical air transport) as of Dec. 5, 2009: 36,562, a decrease from the Oct. 31, 2009 figure of 39,232. According to the DOD, medical air transport personnel data have been recently reclassified, resulting in lower totals.
U.S. military deaths for December 2009: 3, the lowest monthly death toll since the war began in March 2003.
Deaths of civilian employees of U.S. government contractors as of Sept. 30, 2009: 1,442.
Iraqi deaths in December 2009 from war-related violence: at least 383, up sharply from last month's 93, which was the lowest monthly figure since The Associated Press began tracking Iraqi deaths in May 2005.
Assassinated Iraqi academics as of Nov. 23, 2009: 432.
Journalists killed on assignment as of Dec. 1, 2009: 140.
Nearly $715 billion, according to the National Priorities Project.
Prewar: 2.58 million barrels per day.
Dec. 16, 2009: 2.45 million barrels per day.
Prewar nationwide: 3,958 megawatts. Hours per day (estimated): 4-8.
Nov. 30: Nationwide: 5,710 megawatts. Hours per day: N/A.
Prewar Baghdad: 2,500 megawatts. Hours per day: 16-24.
Nov. 30, 2009: Baghdad: N/A. Hours per day: N/A.
Prewar land lines: 833,000.
Oct. 4, 2009: 1,250,000.
Prewar cell phones: 80,000.
Oct. 4, 2009: an estimated 19.5 million.
Prewar: 12.9 million people had potable water.
Oct. 12, 2009: 21.2 million people have potable water.
Prewar: 6.2 million people served.
Oct. 12, 2009: 11.5 million people served.
Jan. 2010: Approximately 1.5 million people are currently displaced inside Iraq.
Prewar: 500,000 Iraqis living abroad.
Jan. 2010: Approximately 2.3 million Iraqis, most in Syria and Jordan.
All figures are the most recent available.
Sources: The Associated Press, State Department, Defense Department, Special Inspector General for Iraq Reconstruction, The Brookings Institution, The Office of the United Nations High Commissioner for Refugees (UNHCR), Committee to Protect Journalists, National Priorities Project, The Brussels Tribunal, and the U.S. Department of Labor.
AP news researchers Julie Reed and Rhonda Shafner compiled this report.