Sorry, my bookmark for the actual data is now a 404 :( It was from Interpol data, 2009 or 2010 I believe. Interestingly while searching for that data I stumbled

Sorry, my bookmark for the actual data is now a 404 :( It was from Interpol data, 2009 or 2010 I believe. Interestingly while searching for that data I stumbled across some for the USA: In the 1980 - 2005 period, 6% of terrorist attacks on American soil were carried out by Islamic extremists. 6%!