The 17,781 people who have made it to southern Spain so far this year outpaced the arrivals by boat to Italy (16,452) or Greece (13,120), according to the latest U.N. refugee agency figures. Of the 972 who lost their lives at sea, nearly a third (292) died trying to reach Spain, the UNCHR said.

And although the numbers of economic migrants and asylum-seekers in Europe are declining overall from the peak levels of 2015, the renewed popularity of the so-called Western Mediterranean route is straining Spain’s law-enforcement response and its social safety networks.

With police stations and juvenile facilities overflowing in Cadiz, Spain’s southernmost province, authorities are setting up makeshift housing in sports facilities, rented hostels or even ferry terminals.