Terrorists aim at intimidating the people, compelling states to comply with their demands, or destabilising or destroying the fundamental political, constitutional, economic or social structures of a country or an organisation.
Terrorism is the attempt to achieve political goals with the use or the threat of violence.
In the EU, groups of people of very different orientation continue to rely on terrorism as a tactic.But terrorist acts and activities on the territory of the EU can also be triggered by developments in other parts of the world. Terrorism continues to impact on the lives of EU
citizens, both inside and outside of the EU. In 2008, four people, including a law enforcement officer, died in the EU as a result of terrorist attacks that were carried out by ETA in Spain. (Director of Europol in his foreword)
The European Union Terrorism Situation and Trend Report 2009 (TE-SAT 2009) is out now.
In 2008 seven member states reported a total of 515 failed, foiled or successfully perpetrated attacks.
1009 is the total number of arrested suspects in EU in 2008. Leader of the “topf seven” is France with 402 arrested suspects, followed by the UK with 256, Spain: 197, Italy 53, Ireland: 52, Belgium: 22 and Germany with 12.
A survey and the whole document you find on the europol website.