cero), used as the point of reference for measuring the height above or below sea level of any point in Spain, due to the marginal tidal variations of the Mediterranean sea at Alicante. Economy Until the global recession which started in 2008, Alicante was one of the fastest-growing cities in Spain. The boom depended partly on tourism directed to the beaches of the Costa Blanca and particularly on the second residence-construction boom which started in the 1960s and revived again by the late 1990s. Services and public administration also play a major role in the city's economy. The construction boom has raised many environmental concerns and both the local autonomous government and city council are under scrutiny by the European Union. The construction surge was the subject of hot debates among politicians and citizens alike. The latest of many public battles concerns the plans of the Port Authority of Alicante to construct an industrial estate on reclaimed land in front of the city's coastal strip, in breach of local, national, and European regulations. (See Port of Alicante for details). The city serves as the headquarters of the European Union Intellectual Property Office and a sizeable population of European public workers live there. The campus of the University of Alicante lies in San Vicente del Raspeig, bordering the city of Alicante to the north. More than 25,000 students attend the university. Between 2005 and 2012 Ciudad de la Luz (Ciutat de la Llum), one of the largest film studios in Europe, had its base in Alicante. The studio shot Spanish and international movies such as Asterix at the Olympic Games by Frédéric Forestier and Thomas Langmann, and Manolete by Menno Meyjes. It was shut down in 2012 for violating European competition law. Government and administration Luis Barcala of the People's Party has been the mayor of Alicante since 19 April 2018. He became mayor after the resignation of Gabriel Echávarri, when the councillor Nerea Belmonte defected from Guanyar Alacant and refused to support the Socialist Party replacement candidate Eva Montesinos. Gabriel Echávarri of the Socialist Party (PSOE) was the mayor of the city from 13 June 2015 until April 2018, following the municipal elections on 24 May 2015. He was supported by the votes from his group (6), plus those from leftist parties Guanyar Alacant (6) and Compromís (3), as well as from the centre-right party Ciudadanos (6). The People's Party