Is this in any way different from the current list of 10 most populous countries in the EU? I mean, just in terms of who is on or off the list and not in terms of the actual numbers or placement on the list? Looks like it might be the same list of 10. Pretty much every country in Europe is either losing population, staying stagnant, or growing very slightly.
I don't think UK will even make on this list because it is leaving the EU so there's no future for Uk and its population. Just remove UK and when it has joined the EU, put it on again. Anyway, how did you predict that the population will increase or decrease. I mean, what happens if the death rate suddenly went up?