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The first seven months of the year saw 143 deaths, which is also the second worst start to the year since 1980. The Madrid train bombings in March 2004 left 191 people dead.
However, researchers pointed out that the 1970s saw several years with higher terrorism death tolls, so Western Europe is not "in a downward spiral".
And only 6% of worldwide terrorism deaths in July 2016 happened in Western Europe, with many more attacks in countries like Iraq and Syria.
We worked with the University of Maryland's Global Terrorism Database (GTD), which has recorded terrorist attacks between 1970 and 2015.