Evolution of the population
If you look at the classes in your school, you will notice that some classes have many pupils and others have fewer pupils.
Even at the beginning of a new school year, there may be children in your class who have joined or left.
It is exactly the same in a municipality. Over the years, inhabitants may come in a municipality, or leave a municipality. How is that possible? You can learn that here.
Choose your municipality here below to find out.