These are the countries with the most terror attacks, mapped

Fewer people have been killed by terrorism around the world for the second consecutive year.

The 2017 Global Terrorism Index, by the Institute for Economics & Peace, has found that 22 per cent fewer terrorism deaths occurred in 2017 than at terrorism's peak in 2014.

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.

Deaths resulting from terrorism around the world decreased by 13 per cent to 25,673 people. 79 countries saw a decline in the impact of terrorism.

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

You can see a snapshot of the global overview in the map below:

The countries impacted the most by terrorism tended to be located in African and Middle Eastern countries.

The 10 largest attacks occurred in Syria, Iraq, South Sudan and Afghanistan. Seven of the 10 occurred in Iraq

The UK ranked 35 out of the 163 countries surveyed. The Index is based on the Global Terrorism Database (GTD) and defines terrorism as follows:

the threatened or actual use of illegal force and violence by a non‐state actor to attain a political, economic, religious, or social goal through fear, coercion, or intimidation.

In order to be included on the GTD the incident has to meet the three following criteria:

• The incident must be intentional - the result of a conscious calculation on the part of a perpetrator.
• The incident must entail some level of violence or threat of violence - including property damage as well as violence against people.
• The perpetrators of the incidents must be sub-national actors. This database does not include acts of state terrorism.

You can read the full report here.

More: The world map of terrorism