Juan José Brugera, Catalan businessman, Chairman of Inmobiliaria Colonial , Catalan banker, Chairman of Caixabank , Catalan businessman, Chairman of Planeta Group , Catalan businessman, Chairman of Grupo Godó Antón Costas, Catalan businessman, Founder of pharmaceutical company Almirall Eduardo Mendoza Garriga, Catalan novelist Juan Marsé, Catalan novelist, journalist and screenwriter. Albert Boadella, Catalan actor, director and playwright Mercedes Milá, Catalan television presenter and journalist , Catalan presenter and journalist , Catalan presenter and journalist Montserrat Caballé, Catalan operatic soprano Joan Manuel Serrat, Catalan musician, singer-songwriter, recording artist, and performer Estopa, Catalan rock/rumba duo Loquillo, Catalan rock singer Miguel Poveda, Catalan flamenco singer Núria Espert, Catalan theatre and television actress, theatre and opera director Javier Cárdenas Catalan singer and television and radio presenter Isabel Coixet, Catalan film director Santi Millán, Catalan actor, showman and television presenter Risto Mejide, Catalan publicist, author, music producer, talent show judge, TV presenter and songwriter Susanna Griso, Catalan presenter and journalist Jorge Javier Vázquez, Catalan television presenter Dani Pedrosa, Catalan Grand Prix motorcycle racer Opinion polling This is a list of recent opinion polling on the subject. Most polls are conducted by the Centre d'Estudis d'Opinió, a research institute under the purview of the Catalan government, or the Institut de Ciencès Politiques i Socials, a part of the Autonomous University of Barcelona. However newspapers such as La Vanguardia or El Periodico also sometimes conduct polls on the subject. Questions about a referendum are listed below if asked, however the ICPS also asked 'Do you want Catalunya to be an independent state or do you prefer to stay part of Spain?', where 'stay part of Spain' regularly performs ~10 points better than 'No' on the referendum question. Long-term prospects Under Spanish law, lawfully exiting Spain would require the Spanish parliament to amend the constitution. It may be difficult for an independent Catalonia to gain international recognition; for example, many countries fail to recognize Kosovo, despite Kosovo having a strong humanitarian claim to independence. Most of Catalonia's foreign exports go to the European Union; Catalonia would need Spain's permission if it wishes to eventually re-enter the EU following secession. Catalonia already runs its own police, schools, healthcare, transport, agriculture, environment policy, municipal governments; other institutions, such as a central bank and a revenue collection service, would have to be rebuilt, possibly losing existing economies of scale. Accounting measures vary, but the BBC and The Washington Post cite estimates