Not well, according the the State Department. Excerpts; link below; my emphasis.
"The State Department's annual report on global terrorism, released Friday, concludes that the number of reported terrorist incidents and deaths has increased exponentially in the three years since the United States invaded Iraq, largely because of Iraq itself.
The report also said that although the United States had made some gains in fighting terrorism, Al Qaeda and its affiliate groups remained a grave threat to U.S. national security at home and abroad — both in Iraq and elsewhere."
"The report said there were 11,111 attacks that caused 14,602 deaths in 2005. Those figures stand in contrast to prior State Department reports, which cited 208 terrorist attacks that caused 625 deaths in 2003; and 3,168 attacks that caused 1,907 deaths in 2004."
http://www.latimes.com/news/nationworld/nation/la-na-terror29apr29,0,2488472.story?coll=la-home-nation