przyrost naturalny

Other depressed areas also lost much, if not all, their natural increase in population.

The Americans doubled in number every 25 years by natural increase.

There has been a fall in the rate of natural increase since 1962 due to falling fertility.

Such a big growth of the Russian population could not be explained solely by natural increase.

Net migration to the region between 2002 and 2006 was 48,000, with a natural increase of 33,000 people.

The result is the rate of natural increase in percentage form.

The natural increase was around 0.3% in late 1990s.

This leads to a small natural increase of around 0.5%.

So, natural increase is negative for 37 peoples in 17 years.

For two decades, their population continued growing through natural increase and illegal immigration.