The I-League, which began in 2007, is a professional league for Indian men's association football clubs. Since then, the tournament has featured 21 clubs and remains India's top football league, although the start of the Indian Super League is creating some concerns. The National Football League (NFL) was established in India in 1996 to professionalize the sport. The I-League, however, was founded after 11 seasons and swiftly surpassed the National Football League as the country's primary football league. I-League's purpose was to professionalize and popularize the sport so that it could be enjoyed by people throughout the country. In six out of the eight tournaments held so far, a team from Goa has won the competition and only twice has a team from outside Goa won the tournament.