context: As a boy, Silva was admitted to the neighboring school of Rio's Campo Grande - equitably the Fluminense feeding school. At the age of 14, Silva impressed Fluminense coach Maurinho during a friendly game at Xerém. He was given a brief trial, in which he was given the role of a defensive midfielder. Silva was given the opportunity to play at a young age. In 1999, at the age of 15, Silva interviewed Madureira, Olaria and Flamengo; he was rejected at every club, the Flamengo attempt being too difficult because even there were no coaches training.
question: When did Thiago Silva start playing soccer?
answers.text: 1999