I don´t know of any projections, but I fear it will not stop, since the needs in Africa are so hard to fathom, that thousands of young people, children, pregnant women... are willing to risk death for months, to reach Europe.  The Canary Islands and the south coast are the closest destinations.

There are many central Europeans coming through the Pyrenees in bus loads also, which seems like a blind point.  The government has no intention of using forceful policies, obviously, and the right-wing likes to name it "the call-effect".

The immigrants´ contribution to the job market, the economy and employment taxes are very positive for the country.

As to the big life questions...

Our knowledge has surpassed our wisdom. -Charu Saxena.