How many years has this professional league competition for football clubs been operating, in which Associazione Calcio CHievoVerona is currently competing?
2011–12 A.C. ChievoVerona season: Associazione Calcio ChievoVerona (more commonly called ChievoVerona or simply Chievo) is currently competing in its 4th consecutive season in the Serie A. Serie A:  It has been operating for over eighty years since the 1929–30 season.
i don't know