Bill Gates, pictured last week, was once again named the world's richest person with a wealth of $79.2 billion . For the world's super-rich, 2015 is already shaping up to be a good year as the number of billionaires reached a record high. There were 1,826 billionaires this year, up from 1,645 in 2014, according to Forbes. And the world's richest person got even richer. Bill Gates's net worth rose to $79.2 billion in 2015 from $76 billion last year. The Microsoft co-founder's fortune increased $3.2 billion - despite a $1.5 billion gift of Microsoft shares to the Bill & Melinda Gates Foundation in November. That put him at the top of the magazine's list of the world's billionaires for the second consecutive year. Gates has topped the list for 16 of the last 21 years. In second place is telecom mogul Carlos Slim Helu, with a net worth of $77.1 billion. He had topped the list in 2013. Next is investor Warren Buffett, who moved up one slot this year with a net worth of $72.7 billion. In fourth was Amancio Ortega, founder of the Inditex fashion group that includes Zara clothing retail shops. He counts a fortune of $64.5 billion. Seven of the richest people in the world are from the U.S. Completing the top ten is Helu, of Mexico, Amancio Ortega of Spain who built his wealth with retail chain Zara and French L'Oreal heiress, Liliane Bettencourt. It's the 29th year for Forbes billionaires' list. Facebook's Mark Zuckerberg jumped five spots to number 16, his first time in the world's 20 richest people. Jack Ma, whose Alibaba online marketplace made the biggest global IPO ever last year, was ranked among the world's 50 richest people, along with two other Chinese nationals. This year's newcomers included Michael Jordan who was ranked at No. 1,741. The average net worth of those on the list was $3.86 billion. And those under the age of 40 took up 46 places on the list. Snapchat's Evan Spiegel, 24, is the world's youngest billionaire while Uber co-founders, Travis Kalanick and Garrett Camp, and their first employee, Ryan Graves, also made up the under-40s group. Billions: Beer heiress Tatiana Casiraghi . 1. Mark Zuckerberg, 30 - Facebook ($33.4bn) 2. Dustin Moskovitz, 30 - Facebook ($7.9bn) 3. Elizabeth Holmes, 31 - blood-testing ($4.5bn) 4. Tom Persson, 30 - H&M ($3bn) 5. Julio Mario Santo Domingo, III, 29 - Bavaria beer ($2.2bn) 6. Tatiana Casiraghi, 31 - Bavaria beer ($2.2bn) 7. Nathan Blecharczyk, 31 - Airbnb ($1.9bn) 8. Anton Kathrein Jr, 30 - antennas ($1.7bn) 9. Evan Spiegel, 24 - Snapchat ($1.5bn) 10. Bobby Murphy, 25 - Snapchat ($1.5bn) Welcome to the club! Michael Jordan became a newly-minted billionaire in 2015, according to Forbes . The world's youngest female billionaire is Elizabeth Holmes, 31, a Stanford University dropout who is the head of blood-testing firm Theranos. Then there were those who dropped off the list - 138 people including designer Michael Kors and Ukrainian President Petro Poroshenko. The combined wealth of the billionaires club is double the GDP of Germany according to NBC. Oxfam claims that the world's growing wealth divide could see the world's wealthiest 1 per cent outstripping the other 99 per cent next year. 1. Bill Gates - Microsoft, $79.2 bn . 2. Carlos Slim Helu -  telecoms, $77.1 billion . 3. Warren Buffet - investor, $72.7 billion . 4. Amancio Ortega - Zara, $64.5 billion . 5. Larry Ellison - Oracle, $54.3 billion . 6. Charles Koch - various, $42.9 billion . 6. David Koch - various, $42.9 billion . 8. Christy Walton -  Walmart, $41.7 billion . 9. Jim Walton - Walmart, $40.6 billion . 10. Liliane Bettencourt - L'Oreal, $40.1 billion . 11. Alice Walton -  Walmart, $39.4 billion . 12. S Robson Walton - Walmart, $39.1 billion . 13. Bernard Arnault - LVMH, $37.2 billion . 14. Michael Bloomberg - Bloomberg, $35.5bn . 15. Jeff Bezos - Amazon, $34.8 billion . 16. Mark Zuckerberg -Facebook,  $33.4 billion . 17. Li Ka-shing - various, $33.3 billion . 18. Sheldon Adelson - casinos, $31.4 billion . 19. Larry Page - Google, $29.7 billion . 20. Sergey Brin - Google, $29.2 billion . Snapchat's Evan Spiegel, 24, is the world's youngest billionaire (left). The world's youngest female billionaire is Elizabeth Holmes, 31, the head of blood-testing firm Theranos (right) 1. Christy Walton, 60, $41.7 billion, Walmart . With  wealth inherited from her late husband John, Mrs Walton holds the largest stake of the Walmart empire. She married the son of Walmart founder Sam. However, the retail heir died when a small plane he was piloting crashed in 2005. Christy and the rest of the Walton family made headlines after they did not sign on to Bill and Melinda Gates and Warren Buffett's pledge to give half their wealth to good causes while they were alive. The family has given an estimated .04 per cent of their wealth to charity. 2. Liliane Bettencourt, 92, $40.1bn, L'Oreal . The 92-year-old heiress of French cosmetics company L'Oreal suffers from dementia and is no longer involved with running the company. She inherited her stake from father Eugene Schueller, who first began selling beauty products in the early 20th century. In the 1950s she married Andre Bettencourt, who also worked at L'Oreal after being involved in a French fascist group that collaborated with Nazi persecution of Jews during World War II. He died in 2007 after leaving L'Oreal in the midst of revelations about his past. The years since Ms Bettencourt's retirement have seen her give away large sums of money. There is currently a fraud trial of ten people accused of using her dementia to swindle her out of millions. 3. Alice Walton, 65, $38.6bn, Walmart . Alice Walton also inherited her stake in her father's empire, though she has not been involved in running the business. She instead chooses to devote her time, energy and vast financial resources to art, building a 200,000-square-foot museum filled with modern works in northwest Arkansas, according to Forbes. Though her primary residence is a horse ranch in Texas, she also owns two floors on Park Avenue where protesters demanded higher wages for her company's workers last year. 4. Jacqueline Mars, 75, $27bn, Mars Inc . Life for Jacqueline Mars has always been pretty sweet. She inherited $26.8billion from the company which bears her name after her grandfather started the business at the turn of the last century. She shares the company evenly with her two brothers, Forrest Jr. and John. 5. Maria Franca Fissolo, 97, $23.4bn, Nutella & chocolates . The widow of Michele Ferrero, who built Ferrero Group with its iconic Ferrero Rocher chocolates and Nutella spread. Mr Ferrero died in February 2014. He had taken over his father Pietro's business which started in Italy during the Second World War from his wife's pastry shop. Laurene Powell Jobs, 51 (pictured 2013), inherited shares of Apple from late husband Steve . 6. Laurene Powell Jobs, 51, $19.5bn, Apple . Laurene Powell Jobs, widow of Steve Jobs, inherited the majority of her wealth from her stake in Apple and Disney. The graduate of Stanford Business School keeps busy with her own set of initiatives, including running the Emerson Collective, which fosters entrepreneurship for the underprivileged and advocates for education reform. The businesswoman is also on the Board of Trustees at Stanford. Though she generally keeps a low-profile, the widow was recently spotted on a Caribbean vacation with former Washington D.C. Mayor Adrian Fenty, 44. The pair are believed to have been dating since 2013. 7. Anne Cox Chambers, 95, $17bn, Cox . The only media mogul among the world's wealthiest women, Anne Cox Chamber's inherited her stake in various Cox media ventures from her father James. A vast information empire, Mrs Cox Chambers has shares in companies including Cox Communications cable company, Kelley Blue Book automotive reselling manual and many local television and radio stations. She has remained active in various affairs beyond her father's businesses, however. The heiress served as ambassador to Belgium during the administration of President Jimmy Carter and was the first woman member of the Atlanta Chamber of Commerce. 7. Susanne Klatten, 52, $16.8bn, BMW . Susanne Klatten, 52, began working for her father Herbert Quandt's company under an alias before marrying an engineer and inheriting her wealth. She also owns stakes in a wind turbine company, Nordex, and chemical company Altana. The mogul earned a bachelors at University of Buckingham in England, an MBA in Switzerland and has three children. 8. Johanna Quandt, 88, $13.9bn, BMW . Susanne Klatten's mother Johanna Quandt, 88, was Herbert Quandt's third wife after working as a secretary for the automaker. Beyond a large stake of the car manufacturer, which makes vehicles including Minis and Rolls-Royces, she also controls part of a security software company based in the Netherlands. Both parents of Mrs Quandt were art historians. She now lives in the German spa town of Bad Homburg, near Frankfurt. Neither Mrs Quandt or Mrs Klatten have ever sold a share of Herbert Quandt's company. 9. Iris Fontbona, 72, $13.5bn, various ventures . Chilean Iris Fontbona, 72, inherited her wealth from her influential family as well as from a marriage to Andrónico Luksic. Her assorted business interests include Chile's largest brewer and a resort in Croatia. The Luksics make investment decisions collectively. Source: Forbes .
There were 1,826 billionaires this year - up from 1,645 in 2014 . Bill Gates's net worth rose to $79.2 billion in 2015 from $76 billion last year . The co-founder of Microsoft has topped the list for 16 of the last 21 years . In second place was telecom mogul Carlos Slim Helu, with a net worth of $77.1 bn, third was investor Warren Buffett, with $72.7 billion .