Required by U.S. law to be published by April 30 of each year, this State Department report is a "full and complete report on terrorism;" it includes descriptions of foreign terrorist organizations as well as regional overviews of countries considered state sponsors of terrorism.
From news release of the National Consortium for the Study of Terrorism and Responses to Terrorism, which calculates the data for the State Department, for the 2013 report:
The 2013 statistical annex documents 9,707 attacks worldwide. These attacks resulted in more than 17,800 deaths and 32,500 injuries. In addition, more than 2,990 people were kidnapped or taken hostage. On average there were 808.91 attacks per month and 1.84 fatalities and 3.36 injuries per attack, including perpetrator casualties.
According to the annex, the 10 countries that experienced the most terrorist attacks in 2013 are the same as those that experience the most terrorist attacks in 2012.
Although terrorist attacks occurred in 93 different countries, they were heavily concentrated geographically. More than half of all attacks (57%), fatalities (66%), and injuries (73%) occurred in Iraq, Pakistan and Afghanistan. By wide margin, the highest number of fatalities (6,378), attacks (2,495) and injuries (14,956) took place in Iraq. The average lethality of attacks in Iraq was 40 percent higher than the global average and 33 percent higher than the 2012 average in Iraq.
Information about the perpetrator group responsible was reported for 32 percent of terrorist attacks in 2013. Of those attacks, more than 20 percent were attributed to the Taliban, operating primarily in Afghanistan. In addition to carrying out the most attacks, the Taliban in Afghanistan was responsible for the greatest number of fatalities in 2013.
The 10 most active perpetrator groups of 2013 include: the Taliban (641 attacks); al-Qaida in Iraq/Islamic State of Iraq and the Levant (401 attacks); Boko Haram (213 attacks); Maoists (India)/Communist Party of India-Maoist (203 attacks); al-Shabaab (195 attacks); Tehrik-i-Taliban Pakistan (TTP) (134 attacks); New People's Amy (NPA) (118 attacks); al-Qaida in the Arabian Peninsula (AQAP) (84 attacks); Revolutionary Armed Forces of Colombia (FARC) (77 attacks); and Bangsamoro Islamic Freedom Movement (BIFM) (34 attacks).