Question: How many years has this professional league competition for football clubs been operating, in which Associazione Calcio CHievoVerona is currently competing?

full_context: Document 1: Hellas Verona F.C.: Hellas Verona Football Club, commonly known simply as Hellas Verona, Verona, or (within the city of Verona itself) Hellas, is a professional Italian football club, based in Verona, Veneto, that currently plays in Serie A. The team won the Serie A Championship in 1984–85.
Document 2: 2015–16 A.C. ChievoVerona season: The 2015–16 season was Associazione Calcio ChievoVerona's 9th consecutive season in Serie A. The club competed in Serie A, finishing 9th, and in the Coppa Italia, where Chievo was eliminated in the third round by Salernitana (0-1 after extra time).
Document 3: Juventus F.C.: Juventus Football Club S.p.A. (from Latin "iuventūs", "youth"; ] ), colloquially known as Juve (] ), is a professional Italian football club in Turin, Piedmont. Founded in 1897 by some Torinese students, the club has worn a black and white striped home kit since 1903 and has played home matches in different grounds around its city, the latest being the 41,507-capacity Allianz Stadium. Nicknamed "Vecchia Signora" ("the Old Lady"), the club has won a thirty-three official league titles, twelve Coppa Italia titles and seven national Super Cups titles, being the record holder for all these competitions; two Intercontinental Cups, two European Champion Clubs' Cup and UEFA Champions Leagues, one European Cup Winners' Cup, a national record of three UEFA Cups, two UEFA Super Cups and one UEFA Intertoto Cup. Consequently, the side leads the historical Federazione Italiana Giuoco Calcio (FIGC) ranking whilst on the international stage occupies the 4th position in Europe and the eight in the world for most confederation titles won with eleven trophies, having led the UEFA rankings during seven seasons since its inception in 1979, the most for an Italian team.
Document 4: List of A.C. Milan records and statistics: Associazione Calcio Milan are an Italian professional football club based in Milan, Lombardy. The club was founded as Milan Foot-Ball and Cricket Club in 1899 and has competed in the Italian football league since the following year. Milan currently play in Serie A, the top tier of Italian football. They have been out of the top tier in only two seasons since the establishment of the Serie A as the single division top tier. They have also been involved in European football ever since they became the first Italian club to enter the European Cup in 1955.
Document 5: 2011–12 Udinese Calcio season: The 2011–12 season was Udinese Calcio's 17th consecutive and 32nd Serie A season. The club had a successful league season, finishing third in Serie A, but disappointed in the three cup competitions in which it competed. Udinese were eliminated from the Coppa Italia in the round of 16, and also experienced disappointment in the UEFA Champions League, where it was eliminated in the play-off round and thus failed to make its first appearance in the group stage since the 2005–06 season. As a result, Udinese dropped down to the UEFA Europa League, where it successfully advanced from both the group stage and the round of 32, only to be eliminated in the round of 16. Club captain and legend Antonio Di Natale was once again the team's top scorer, with 23 goals in Serie A and 29 in total.
Document 6: List of Italian football champions: The Italian football champions (Italian: "scudetto" , "little shield", plural: "scudetti") are the annual winners of Serie A, Italy's premier football league competition. The title has been contested since 1898 in varying forms of competition. Juventus are the current champions, and have won a record of 33 titles. The first time the "Scudetto" was used was in 1924 when Genoa won its 9th championship title and decided to add a little shield to their shirt as to reward and celebrate themselves as champions.
Document 7: Serie A Football Club of the Year: The Serie A Football Club of the Year (in Italian: "Società dell’anno") is an annual award given to football club in the top tier of Italian football, the Serie A, who is seen to be the best of the calendar season. It is awarded within the Gran Galà del Calcio event.
Document 8: 2016–17 A.C. ChievoVerona season: The 2016–17 season was Associazione Calcio ChievoVerona's tenth consecutive season in Serie A. The club finished 14th in Serie A and advanced to the round of 16 in the Coppa Italia, where they were eliminated by Fiorentina.
Document 9: Serie A: Serie A (] ), also called Serie A TIM due to sponsorship by TIM, is a professional league competition for football clubs located at the top of the Italian football league system and the winner is awarded the Coppa Campioni d'Italia. It has been operating for over eighty years since the 1929–30 season. It had been organized by Lega Calcio until 2010, when the Lega Serie A was created for the 2010–11 season. Serie A is regarded as one of the best football leagues in the world and it is often depicted as the most tactical national league. Serie A is the world's second-strongest national league according to IFFHS and has produced the highest number of European Cup finalists: Italian clubs have reached the final of the competition on a record 27 different occasions, winning the title 12 times. Serie A is ranked third among European leagues according to UEFA's league coefficient, behind La Liga, the Premier League and ahead of the Bundesliga and the Ligue 1, which is based on the performance of Italian clubs in the Champions League and the Europa League during the last five years. Serie A led the UEFA ranking from 1986 to 1988 and from 1990 to 1999.
Document 10: 2006–07 Serie A: The 2006–07 Serie A season (officially known as the Serie A TIM 2006–2007) began 2 September 2006. It was scheduled to begin on 26 and 27 August, but was then postponed due to the 2006 Italian football scandal. It was the 104th Italian championship held, the first without the presence of Juventus, and the 75th Serie A league, the first being held in 1929. On 22 April 2007, Internazionale became Serie A champions after defeating Siena, as Roma's loss to Atalanta left Inter with a 16-point advantage with five matches to play.
Document 11: S.S.C. Napoli: Società Sportiva Calcio Napoli, commonly referred to as Napoli (] ), is a professional Italian football club based in Naples, Campania. Formed in 1926, the club plays in Serie A, the top flight of Italian football. The club has won Serie A twice, and been runners-up six times, the Coppa Italia five times, the Supercoppa Italiana twice, and the 1988–89 UEFA Cup.
Document 12: List of Inter Milan records and statistics: Football Club Internazionale Milano is an Italian professional association football club based in Milan. The club was formed in 1908 as "Football Club Internazionale", and played its first competitive match against Milan. Internazionale currently plays in the Italian Serie A. Internazionale was one of the founding members of Serie A in 1929, and is the only club, never to have been relegated from the league. They have also been involved in European football, winning UEFA Champions League and UEFA Cup three times. Inter become the first club to win back-to-back European Cups, achieving the feat in 1964 and 1965.
Document 13: 2012–13 Genoa C.F.C. season: The 2012–13 Genoa C.F.C. season is the club's sixth consecutive Serie A season of the football. This article lists its season results, transfers and statistics.
Document 14: 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.
Document 15: 2017–18 A.C. ChievoVerona season: The 2017–18 season is Associazione Calcio ChievoVerona's tenth consecutive season in Serie A. Chievo are competing in Serie A and the Coppa Italia.
ground_truth: over eighty years