 In 2007, 32% named Catalan as the primary language that they actually did speak, against 50% for Spanish (Castilian); 7% spoke the two languages equally.The ethnolinguistic composition of the population has been heavily affected by extensive immigration from non-Catalan speaking parts of Spain, much of it associated with rapid growth in industry, since the late 19th century and more particularly between 1950 and 1975.Catalonia, especially Barcelona, was the first part of Spain to industrialize.