There was, however, an increase in attacks in developed countries, with a 67 per cent increase in attacks and a nearly 600 per cent increase in deaths – indicating a small number of attacks caused a very high number of casualties.
However, the index deteriorated overall, because the countries that deteriorated (such as Iraq, South Sudan, Turkey and Ethiopia), did so dramatically.
Iraq in particular saw 2,800 more deaths in 2016 than in 2015.
The overall score for each country is measured in four factors:
- total number of terrorist incidents in a given year
- total number of fatalities caused by terrorists in a given year
- total number of injuries caused by terrorists in a given year
- a measure of the total property damage from terrorist incidents in a given year
The countries impacted the most by terrorism tended to be located in African and Middle Eastern countries.