Valencia:

The third largest city in Spain and the 24th most populous municipality in the European Union, Valencia has a population of 809,267 within its administrative limits on a land area of 134.6 km2 (52 sq mi). The urban area of Valencia extending beyond the administrative city limits has a population of between 1,561,000 and 1,564,145. 1,705,742 or 2,300,000 or 2,516,818 people live in the Valencia metropolitan area. Between 2007 and 2008 there was a 14% increase in the foreign born population with the largest numeric increases by country being from Bolivia, Romania and Italy.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". From which countries does the biggest rise in Valencia's foreign population come?
Bolivia, Romania and Italy