What is migration growth? How did it change in the 20th century?

This is the difference between the number of arrivals in the country and the number of departures for a certain period. From 1955 to 1975 – negative; since the mid 70s has been increasing; since 1995 its decline began

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.