Europol – the EU agency for law enforcement cooperation – publishes an EU terrorism situation and trend report every year. The report provides figures on terrorist attacks and terrorism-related arrests in the European Union and is based on information provided by EU member states.
I thought of sharing a relevant link from Europol with some very comprehensive graphs and several more info for those interested.
Terrorist attacks in the EU by type (2010-2021)
Thx, always good to have some more context.