Allsvenskan English: The All-Swedish, also known as Fotbollsallsvenskan, English: The Football All-Swedish) is a Swedish professional league for men's association football clubs. It was founded in 1924, and is the top flight of the Swedish football league system, operating on a system of promotion and relegation with Superettan. Seasons run from late March or early April to beginning of November, with the 16 clubs all meeting each other twice, resulting in a 30-match season, for a total of 240 matches league-wide. Allsvenskan is ranked 20th in the UEFA coefficients of leagues based on performances in European competitions over the last five years. As it stands now, Allsvenskan is ranked highest of the leagues in Scandinavia. The current champions are IFK Norrköping, who won the title in the 2015 season.