ISIL foreign fighters who have gone to Syria tend to have high levels of education but low incomes. One of the reasons fighters join is a feeling of exclusion in their home countries, according to the 2016 Global Terrorism Index (GTI), produced by the Institute for Economics and Peace. The report adds that half of all plots with an ISIL connection were conducted by people who have had no direct contact with ISIL.
Since 2006, 98 percent of all deaths from terrorism in the U.S. have resulted from attacks carried out by lone actors, according to the GTI. The report notes that 76 countries improved their scores in the GTI, while 53 countries deteriorated. As many countries experienced record levels of terrorism, the overall GTI score deteriorated by 6 percent from the previous year.