Question: What year did the group from Ben Mezrich's book, Brining Down the House: The Inside Story of Six MIT Students Who Took Vegas for Millions, begin to operate successfully?

full_context: Document 1: Massachusetts Institute of Technology: The Massachusetts Institute of Technology (MIT) is a private research university in Cambridge, Massachusetts. It is often ranked as one of the world's most prestigious universities.
Document 2: Blackjack Forum: Blackjack Forum was a trade journal for professional blackjack players, founded in 1981 and published by noted blackjack author Arnold Snyder. Originally a 100-page quarterly journal, it expanded into an online forum which is frequented by professional gamblers, attorneys, industry people, mathematicians and other aficonados. It was considered one of the major newsletters or journals for the blackjack market, along with Stanford Wong's "Current Blackjack News".
Document 3: Harvard University: Harvard University is a private Ivy League research university in Cambridge, Massachusetts, established in 1636, whose history, influence, and wealth have made it one of the world's most prestigious universities.
Document 4: Spanish 21: Spanish 21 is a blackjack variant owned by Masque Publishing Inc., a gaming publishing company based in Colorado. Unlicensed, but equivalent, versions may be called Spanish blackjack. In Australia and Malaysia, an unlicensed version of the game, with no dealer hole card and significant rule differences, is played in casinos under the name "Pontoon". It was first introduced into Nevada casinos in about 1995.
Document 5: 21 (2008 film): 21 is a 2008 American heist drama film directed by Robert Luketic and starring Jim Sturgess, Kevin Spacey, Laurence Fishburne, Kate Bosworth, Liza Lapira, Jacob Pitts, Aaron Yoo, and Kieu Chinh. The film is inspired by the true story of the MIT Blackjack Team as told in "Bringing Down the House", the best-selling book by Ben Mezrich. Despite its largely mixed reviews and controversy over the film's casting choices, "21" was a box office success, and was the number one film in the United States and Canada during its first and second weekends of release.
Document 6: Straight Flush (book): Straight Flush: The True Story of Six College Friends Who Dealt Their Way to a Billion-Dollar Online Poker Empire—and How It All Came Crashing Down is a book by Ben Mezrich. The text was published on May 28, 2013 by William Morrow and Company. "Straight Flush" tells the story of a group of University of Montana students who turned their weekly poker game into AbsolutePoker.com, one of the largest online gambling companies in the world.
Document 7: Bringing Down the House (book): Bringing Down the House: The Inside Story of Six MIT Students Who Took Vegas for Millions is a book by Ben Mezrich about a group of MIT card counters commonly known as the MIT Blackjack Team. Though the book is classified as non-fiction, the "Boston Globe" alleges that the book contains significant fictional elements, that many of the key events propelling the drama did not occur in real life, and that others were exaggerated greatly.
Document 8: Blackjack Switch: Blackjack Switch is a casino gambling game invented by Geoff Hall and patented in 2009. It is based on blackjack, but differs in that two hands, rather than one, are dealt to each playing position, and the player is initially allowed to exchange ("switch") the top two cards between hands. Natural blackjacks are paid 1:1 instead of the standard 3:2, and a dealer hard 22 pushes all player hands except a natural.
Document 9: MIT Blackjack Team: The MIT Blackjack Team was a group of students and ex-students from Massachusetts Institute of Technology, Harvard Business School, Harvard University, and other leading colleges who used card counting techniques and more sophisticated strategies to beat casinos at blackjack worldwide. The team and its successors operated successfully from 1979 through the beginning of the 21st century. Many other blackjack teams have been formed around the world with the goal of beating the casinos.
Document 10: Semyon Dukach: Semyon Dukach (born October 25, 1968) is Managing Director of Techstars in Boston. He is also known as a top angel investor, the Chairman of SMTP (company) (NASDAQ: SMTP), and a former professional blackjack player with the MIT Blackjack Team. He played with Strategic Investments and later was one of the founding members and team leaders on Amphibian Investments whose exploits were chronicled in Ben Mezrich's "Busting Vegas" and referred to in Mezrich's "Bringing Down the House". Dukach was the main character in "Busting Vegas" and the only member of the MIT blackjack team to be referred to by his real name in either book.
Document 11: MIT Sloan School of Management: The MIT Sloan School of Management (also known as MIT Sloan or Sloan) is the business school of the Massachusetts Institute of Technology, in Cambridge, Massachusetts, United States.
Document 12: Mike Aponte: Mike Aponte, also known as MIT Mike, is a professional blackjack player and a former member of the MIT Blackjack Team. Aponte was part of a team of Massachusetts Institute of Technology (MIT) students that legally won millions playing blackjack at casinos around the world by counting cards. He is the basis for one of the main characters, Jason Fisher, in the book, "Bringing Down the House", by Ben Mezrich, which inspired the motion picture, "21".
Document 13: Arnold Snyder: Arnold Snyder is a professional gambler and gambling author. He was elected by professional blackjack players as one of the seven original inductees into the Blackjack Hall of Fame which is hosted at Barona Casino for his record as a blackjack player and his innovations in professional gambling techniques. He was the first blackjack authority to publish the importance of deck penetration (depth of the deal) in card counting, in his 1980 book "The Blackjack Formula". He was also the first blackjack researcher to publish (in "Blackjack Forum", 1981–1983) that radical simplification of blackjack card counting systems did not hurt earnings.
Document 14: David Irvine (blackjack player): David Irvine is an engineer and professional blackjack player and a former member of the MIT Blackjack Team. Irvine was a part of the blackjack team featured in the best selling book, "Bringing Down the House", by Ben Mezrich. Irvine was one of the members of a team of MIT students that won millions at blackjack tables around the world by counting cards. The story of the MIT Blackjack Team was made into a major motion picture, 21, which was released in theaters on March 28, 2008. In 2004, Irvine co-founded a company called the Blackjack Institute with business partner Mike Aponte that provides instructional products and services on how to win at blackjack. Irvine has spoken at various events describing his experiences with the team, including the Global Gaming Expo Conference in 2007, the Chicago University Private Equity Network in 2006, among other events. Irvine is also the co-owner of an engineering consulting company called SBR Technologies, Inc., that focuses on the use of a wastewater treatment process called the sequencing batch reactor.
Document 15: Busting Vegas: Busting Vegas (stylized as Busting Vega$) is a 2005 book by Ben Mezrich about a group of MIT card counters and blackjack players commonly known as the MIT Blackjack Team. The subtitle of the original, hardcover edition was "The MIT Whiz Kid Who Brought the Casinos to Their Knees", but the subtitle of the subsequent paperback editions was "A True Story of Monumental Excess, Sex, Love, Violence, and Beating the Odds".
ground_truth: 1979