Which country has or had the largest numbers (in absolute and/or relative terms) of indigenous itinerants in any period of history? For this question, I consider itinerants to mean a group for which travel is a significant part of their lifestyle, and travels individually or as a group, through a broader settled society.
This does not include nomadic groups like the Mongols, because they did not travel through a settled society, or refugees, migrants, etc because travel was for resettlement, it was not a lifestyle. For the purposes of this discussion, I would also like to exclude the Romani (unless considering them in the country of their origin, northern India) since they are mostly concentrated in countries to which they are not (in one sense) indigenous. I would also exclude tourists because only a small proportion would fit my definition.