Question: When was the stadium at which the 1998 Barcelona Dragons played its home games renovated to be the main stadium for the 1992 Summer Olympics?

Context articles: Bhutan at the 2016 Summer Olympics
Barcelona Dragons
Rochester Dragons
1998 Barcelona Dragons season
Baltimore Ravens Cheerleaders
Estadi Olímpic Lluís Companys
List of Olympic venues in equestrian
Des Moines Dragons
Djibouti at the 1992 Summer Olympics
Taekwondo at the Summer Olympics

Bhutan, a country in Southern Asia, participated in nine Summer Olympic Games between its debut in the 1984 Summer Olympics in Los Angeles, United States and the 2016 Summer Olympics in Rio de Janeiro, Brazil.
 The highest number of Bhutanese athletes participating in a Summer Games is six in both the 1984 Summer Olympics and the 1992 Summer Olympics in Barcelona, Spain.
 Bhutan competed at the Rio Summer Games from 5 to 21 August 2016.
 No Bhutanese athlete has ever won a medal at the Olympics.
 The two athletes who were selected to represent Bhutan at the Rio Games were Karma in the women's individual archery tournament and Kunzang Lenchu in the women's 10 metre air rifle shooting contest.
 Along with the two athletes, the Secretary General of Bhutan's Olympic Committee, and two coaches, the country's delegation was led by the heir presumptive to the Bhutan throne Jigyel Ugyen Wangchuck.
 Karma was selected as the flag bearer for the opening ceremony while Lenchu held it at the closing ceremony.
The Barcelona Dragons were a team originally in the World League of American Football and later in the resurrected NFL Europe.
 Their home field in Barcelona was the Estadi Olímpic de Montjuic, the 1992 Olympic Stadium, and later the Mini Estadi.
 The Dragons were successful on the field, making it to 4 World Bowls (1991, 1997, 1999, 2001) and winning World Bowl V in 1997.
 The team was made part of the FC Barcelona organization in 2002 as the FC Barcelona Dragons.
 Despite these efforts, the franchise's fan support decreased and the team began to struggle financially.
 After the 2003 season, the Dragons were discontinued and they were replaced in the league by the Cologne Centurions.
The Rochester Dragons were a men's ultimate team based in Rochester, New York, competing in the East Division of the American Ultimate Disc League.
 The team was introduced during the 2012 season as the Buffalo Hunters before moving to Rochester in 2013.
 The Dragons played their 2014 home games at SUNY Brockport in Brockport, New York with the exception of the May 17, 2014 game which was played at Sahlen's Stadium in Rochester, New York, known for being the home of the 2015 USL Champion Rochester Rhinos and the Western New York Flash.
 The 2015 home games are scheduled to be played at Spencerport High School's stadium.
 The Dragons had their first franchise win on May 5, 2013 against the New Jersey Hammerheads, winning 26 to 14 at home.
The 1998 Barcelona Dragons season was the sixth season for the franchise in the NFL Europe League (NFLEL).
 The team was led by head coach Jack Bicknell in his sixth year, and played its home games at Estadi Olímpic de Montjuïc in Barcelona, Catalonia, Spain.
 They finished the regular season in fourth place with a record of four wins and six losses.
The Baltimore Ravens Cheerleaders are a cheerleading and dance squad for the Baltimore Ravens of the National Football League.
 Unlike other NFL Cheerleading squads, the Ravens squad is a co-ed squad, with the female cheerleaders doing various dance moves, and the males working on stunts, as in traditional cheerleading.
 The group was founded in 1998, and currently consists of 48 members (20 stunt team performers and 28 dancers).
 The squad performs at the Ravens home stadium M&T Bank Stadium.
 The squad's director is Tina Galdieri, who cheered at the 1996 Summer Olympics in Atlanta, as well as the WLAF's (later NFL Europe) Barcelona Dragons, and also led the University of Maryland's cheerleading squad to a National Championship in 1999.
 The squad also has a "Lil Ravens" summer program, and unlike the other squads, boys also are permitted to join.
 The group makes various appearances at parties and corporate functions throughout the year.
 The female members of the squad also has a swimsuit calendar, with their 2012 calendar taking place in the Bahamas.
 The squad currently has 31 female members.
Estadi Olímpic Lluís Companys (] , formerly known as the Estadi Olímpic de Montjuïc and Estadio de Montjuic) is a stadium in Barcelona, Catalonia, Spain.
 Originally built in 1927 for the 1929 International Exposition in the city (and Barcelona's bid for the 1936 Summer Olympics, which were awarded to Berlin), it was renovated in 1989 to be the main stadium for the 1992 Summer Olympics.
For the Summer Olympics, there are 53 venues that have or will be used for equestrian.
 From 1912 to 1992, the events took place in more than one venue.
 Since the 1992 Summer Olympics, the equestrian events have taken place on a single venue in an effort to reduce costs.
 During the 1964 to the 1980 Summer Olympics, an equestrian event was the final event before the closing ceremonies of the respective Olympics.
 The last equestrian event that took place at the main stadium was at the 1988 Summer Olympics though it was not the final event before the closing ceremonies.
 That honor would fall for the end of the men's marathon event.
 Stockholm Olympic Stadium is the only equestrian venue to serve host for more than one Summer Olympics, doing so in 1912 and 1956.
The Des Moines Dragons were a minor league basketball team in the International Basketball Association.
 They were located in Des Moines, Iowa, and played at the Iowa Veterans Memorial Auditorium.
 The Dragons were owned by Paul Miller, and Dick Giesen.
 The Des Moines Dragons were the International Basketball Association champions in 2000 and the runner-up in 2001 to the Dakota Wizards.
 They played in the IBA from the 1997-1998 season until the end of the 2000-2001 season.
 The Dragons were coached by Glenn Duhon from 1997 through 2000 and Michael Born from 2000 through 2001.
 The Dragons played their home games at Veterans Auditorium from 1997 through 2001.
 In 2000 Lonnie Cooper received the IBA Playoffs MVP.
 Lonnie Cooper of the Dragons received the 2001 IBA MVP as well as the IBA Finals MVP award.
 Also in 2001 Michael Born was named the Coach of the year in the IBA along with David Joerger of the Dakota Wizards.
 The Dragons were the IBA organization of the year in all four years of their existence.
Djibouti participated in three Summer Olympics between its debut at the 1984 Games in Los Angeles, United States and the 1992 Summer Olympics in Barcelona, Spain.
 Djibouti made their Olympic debut in 1984, sending three athletes.
 Djibouti's one and only medal prior to these games was a bronze awarded to Hussein Ahmed Salah in the men's marathon at the 1988 Summer Olympics in Seoul, South Korea.
 The 1992 Summer Olympics marked a record in the amount of athletes that Djibouti has sent to the Summer Olympics.
Taekwondo at the Summer Olympics made its first appearance as a demonstration sport at the 1988 Summer Olympics in Seoul, South Korea.
 The opening ceremony featured a mass demonstration of taekwondo with hundreds of adults and children performing moves in unison.
 Taekwondo was again a demonstration sport at the 1992 Summer Olympics in Barcelona, Spain.
 There were no demonstration sports at the 1996 Summer Olympics in Atlanta, Georgia.
 Taekwondo became a full medal sport at the 2000 Summer Olympics in Sydney, Australia, and has been a sport in the Olympic games since then.