We have to think about the logistics of the request, both for the people who will have to find the information and for us.
It may be easier for the people doing the research if they knew that we were going to request information for the period from 2014 to 2022, so eight years. If we go back to them later and ask them for information pertaining to other years and other trips, it may be harder for them to dig through the archives. I'm not an archivist, but I think it could make things harder for them.
As I already said, I would like to reach a consensus. It's not that radical of an idea. It could be the option that makes things easiest for the people doing the research. I don't want to make this agonizing for them.