Wait a second...
Of course the population does not make any difference.
What would make a difference is the amount of people working in a certain area. It depends on how many work per capita in a certain area.
I have lived in both Sweden and Germany and I know that the Swedes work faster and are much more effecient than the Germans.
Daily life in Sweden is more efficient than in Germany.
The big exeption is within the health system.
Sweden has more doctors and nurses per capita than Germany, but the waiting time to get an appoinment is much longer in Sweden. There much more time is used for filling out forms.