You bring up several interesting facts.  The source that the table allegedly came from, even if it exists, is questionable.  I wouldn't be surprised if a publication like this was the work of one of the directorates of the KGB.  In the history section of this page, there's a reference to the demographic makeup of the city of the 19th century already. I don't know who inserted the text about demographics in the history section since it wasn't a part of my text when I wrote the history section for this page, but I think this reference needs to be checked for accuracy too.  At this point,  I suggest that we remove the ethnic groups table because it is neither neutral nor accurate.