Poor anchovies doesn't understand the difference between "worldwide" and "domestic":
A new report tracking the roots, spread and effects of violent Islamist extremism found that 121 groups that share elements from a common ideology are now operating worldwide. Their activities resulted in the deaths of 84,000 people – nearly 22,000 of them civilians – in 66 countries in 2017, the report found.
https://www.cbsnews.com/news/islamist-extremism-caused-84000-deaths-worldwide-in-2017-a-new-report-says/
And that's just one year.
Now let's look at anchovie's other claim regarding domestic terrorism:
A 2017 study estimated that 3.45 million Muslims were living in the United States, about 1.1% of the total U.S. population.
https://en.wikipedia.org/wiki/Islam_in_the_United_States
1,1%. Yet they accounted for 26% of all terrorism-related fatalities in the USA over the last decade, as anchovies admits.