In 2000 there were 41 significant attacks on aid workers recorded across the globe. By 2014, it had risen to 190. In those 15 years, over 3,000 aid workers have been killed, injured or kidnapped.
This is the story of each of those attacks.
Now, explore the data yourself. Click on a country to zoom and see incidences, specify the information using the filters on the right and drag the sliders to the right and left of the timeline to filter by time. For optimal experience, view on a larger screen.