Mostly German Ancestry in the U.S.?

A colleague of mine found this overview online and posted it to me. I knew that a lot of people in the US had German roots. But that many? I am wondering, though, in which category they put Swedish here. Wondering if they mixed it with German? There were a lot of Swedish emigrants to the United States as well. However, they are not listed separately like i.e. the Norwegian and Finnish.

Therefore I wonder if one should trust these stats as much as the News…

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