Benfica is the most popular club in Portugal and has always been seen as the working-class club of Portugal. According to a study published in 2006 by professors Luís Reto and Jorge de Sá, with the stamp of approval by Instituto Nacional de Estatística and Secretaria de Estado das Comunidades, Benfica has approximately 14 million supporters worldwide: over 5.5 million in Europe (4.7 in Portugal); over 6 million in Mozambique (3.8) and Angola (2.7); over 1 million in the United States and Canada; and the remainder in Brazil, Venezuela, the Caribbean, Indochina, China, Australia and India. According to a study performed for UEFA in 2012, Benfica is the European club with the highest share of football supporters in its own country (47%).