Question: When was the magazine, that awarded Geoff Rowley their Skater of the Year" award, founded ?

Context paragraphs:
Geoff Christian Medal: The Geoff Christian Medal, commonly referred to as the Christian Medal, is an Australian rules football award given to the best player in the Australian Football League (AFL) from one of the two teams based in Western Australia, the Fremantle Football Club and the West Coast Eagles.  First awarded during the 1999 season, the award is named after and struck in honour of Geoff Christian (1934–1998), a sports writer and broadcaster who served as chief football writer for "The West Australian" between 1961 and 1988, before being posthumously inducted into the Australian Football Hall of Fame and the West Australian Football Hall of Fame in 2000 and 2004, respectively.

Flip Skateboards: Flip Skateboards is a United States (US)-based international skateboard company, co-owned by Jeremy Fox and professional skateboarder Geoff Rowley.  The company produces skateboard hard goods (decks, wheels, bearings, completes, and hardware), soft goods (T-shirts, tops, sweatshirts, hats, beanies, and socks), DVDs, and accessories (skateboard wax, sunglasses, key covers, banners, "power sliders", and mugs).  The brand was distributed globally by US company NHS Inc.  Starting in July of 2017, the brand is distributed by HLC.

Hugo Award for Best Fan Artist: The Hugo Awards are presented every year by the World Science Fiction Society for the best science fiction or fantasy works and achievements of the previous year.  The award is named after Hugo Gernsback, the founder of the pioneering science fiction magazine "Amazing Stories", and was once officially known as the Science Fiction Achievement Award.  The award has been described as "a fine showcase for speculative fiction" and "the best known literary award for science fiction writing".  The Hugo Award for Best Fan Artist is given each year for artists of works related to science fiction or fantasy which appeared in low- or non-paying publications such as semiprozines or fanzines.  A Hugo Award for professional artists is also given.  The fan award was first presented in 1967 and has been awarded annually.  Beginning in 1996, Retrospective Hugo Awards, or "Retro Hugos", have been available to be awarded for years 50, 75, or 100 years prior in which no awards were given.  To date, Retro Hugo awards have been awarded for 1939, 1941, 1946, 1951, and 1954, although the 1939, 1941, and 1954 Retro Hugos received insufficient nominations for the Fan Artist Hugo to make the ballot.

Thrasher (magazine): Thrasher is a skateboarding magazine founded in January 1981 by Kevin Thatcher, Eric Swenson, and Fausto Vitello, and published by High Speed Productions, Inc. of San Francisco, USA.  The publication consists primarily of skateboard- and music-related articles, photography, interviews and skatepark reviews.  The magazine also maintains a website, which includes segments with names such as "Firing Line" and "Hall of Meat", an online store, a video collection, a radio show, and a forum for registered users.  The company also owns and operates the Double Rock indoor skateboarding facility.

The Mabini Academy: The Mabini Academy of Lipa City, Batangas, Philippines, was founded as a non-stock, non-profit corporation on June 10, 1922 by Professor Randall A. Rowley, Dean Francisco Benitez, Mrs. Paz M. Benitez, Dr. Jose M. Katigbak, Mrs. Tarcila M. Katigbak, and Miss Emilia Malabanan.  It opened on June 12, 1922 with an enrolment of more than one hundred students, two first year classes and one second year class.  In June, 1923, a third year class was added, and in June, 1924, the complete high school course was given.  On March 25, 1925, it received government recognition.  It continued functioning as a secondary school, giving the complete general course (day) until December 9, 1941, when all schools closed because of the Second World War.  It remained closed during the Japanese occupation.  It reopened in June, 1945 and has been functioning ever since.

Geoff Rowley: Geoffrey Joseph Rowley Junior (born 6 June 1976) is an English professional skateboarder, former co-owner of Flip Skateboards and owner of the Civilware Service Corporation.  Rowley is a recipient of the prestigious "Skater of the Year" award, judged and presented by "Thrasher Magazine".

We'll Think of Something: We'll Think of Something is a British sitcom that aired on ITV in 1986.  Starring Sam Kelly, it was written by Geoff Rowley, who had also written episodes of "Birds of a Feather" and "Goodnight Sweetheart".  It was made by Thames Television and was directed by John Howard Davies.

Maloof Skate Park: The Maloof Skate Park, or Maloof Money Cup Washington DC Skate Park, opened to the public in March 2012.  It is a 15,000-square-foot skate park, located next to RFK Stadium in Washington, D.C. The park was designed by Pro Skater Geoff Rowley and Joe Ciaglia's team at California Skateparks.

Jake Duncombe: Jake Duncombe is an Australian professional skateboarder for Life Extension Skateboards who was awarded "SLAM" magazine's Australian "Skater of the Year" award in 2006, and was one of the youngest professional sportspeople in Australia in 2004.  Duncombe was sponsored by the Blind Skateboards skateboard deck company, founded by Mark Gonzales, for nine years and released a signature model skate shoe with Globe International.

Riverside Business and Enterprise College: Riverside Business and Enterprise College was a secondary school in Rowley Fields, Leicester, England.  Awarded Business and Enterprise College specialist status in 2006.  Following declining enrollment and a recommendation by the local authority, the school stopped accepting new pupils on October 5, 2009 and closed in Friday July 15, 2011.  In its final year the school had approximately 200 students in year groups 8,9 and 11 (ages 12–16).

Supporting paragraphs: Geoff Rowley Thrasher (magazine)
Answer: January 1981