Question: When was the hockey league in which Christoffer Forsberg is now playing founded ? 
Sentence (from "Swedish Hockey League"): The league was founded in 1975, and while Swedish ice hockey champions have been crowned through various formats since 1922, the title, as well as the Le Mat Trophy, have been awarded to the winner of the SHL playoffs since the league's inaugural 1975–76 season.
Relevant evidence: Yes