The map that shows where terror attacks are rising and most lives are lost
More than half the terror attacks* between 2002 and the end of 2014 occurred after 2011, according to data from the Global Terrorism Database.
The database - which has yet to update with data for 2015 - shows there have been 89,000 terror attacks since militants attacked the United States in September 2001.
Almost one in four of these (16,818) happened in 2014, compared to 1332 in 2002 and 5065 in 2011.
As the animated map shows, the escalation has been driven by a big increase in attacks in the Middle East and North Africa region.
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There were 3925 attacks recorded in Iraq in 2014, 2146 in Pakistan and 1820 in Afghanistan.
Iraq, Pakistan and Afghanistan consistently top the annual terror attack rankings and have all seen increases in the frequency of attacks in recent years.
While Western Europe has seen a series of major terror attacks in the past year, levels of terror in those countries remain low by comparison.
There were 213 terror attacks in Western Europe in 2014, compared to 6913 in the Middle East and North Africa.
For the entire time period we looked at there 1830 deaths as a result of terrorism in Western Europe, compared to 24,865 in South Asia and 24,534 in the Middle East and North Africa.
In total, 68,889 deaths from terrorism were recorded in the database between 9/11 and the end of 2014.
* The Global Terror Database defines a terror attack as "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".