Question: The band that created the live album "Bootlegged in Japan" was formed in what year?

Context paragraphs:
Live at the El Mocambo (Elvis Costello album): Live at the El Mocambo is a 1993 live album by Elvis Costello and the Attractions.  Recorded in March 1978 from a live radio broadcast by CHUM-FM, a tape of the broadcast was obtained by the Canadian division of CBS records and released as an exclusive Canadian promotional album in the same year.  As the show's fame began to grow, it became heavily bootlegged.  It was first legally made available with the release (as "Live at El Mocambo") either as disc 4 of the "2½ Years" box set or to US purchasers of the first three CDs, in exchange for tokens included in the CD packaging, directly from Rykodisc.  The concert was reissued, as a mainstream release, on 29 September 2009 by Hip-O Records, with the same content of the 1978 promotional album.

Brussels Affair (Live 1973): Brussels Affair (Live 1973) is a live album by The Rolling Stones, released in 2011.  It is compiled from two shows recorded in Brussels on 17 October 1973 in the Forest National Arena, during their European Tour.  The album was released exclusively as a digital download through Google Play Music on 18 October 2011 in the US and through The Rolling Stones Archive website for the rest of the world in both lossy MP3 and lossless FLAC format.  The 2011 digital edition has been bootlegged on physical CD.  On 29 August 2012, an official announcement was made, stating its physical release as a high-priced boxset (from $750 to $1,500 depending on the edition).  All three releases include a triple LP and double CD.

Diatribes: Diatribes is the sixth album by Napalm Death, originally released in 1996 on Earache Records.  It was released as double 10" vinyl, regular CD, special digipak CD with space for the Greed Killing EP and MC.  In 2010, Earache issued a re-release of "Diatribes" in a box set that also included the Greed Killing EP and the live album Bootlegged in Japan.

Napalm Death: Napalm Death are a British extreme metal band formed in Meriden, West Midlands, England, in 1981.  While none of its original members remain in the group since December 1986, the lineup of vocalist Mark "Barney" Greenway, bassist Shane Embury, guitarist Mitch Harris and drummer Danny Herrera has remained consistent of the band's career since 1992's "Utopia Banished", although, from 1989 to 2004, Napalm Death were a five-piece band after they added Jesse Pintado as the replacement of one-time guitarist Bill Steer; following Pintado's departure, the band reverted to a four-piece rather than replace him.

Live from the Point Depot: Love: Live from the Point Depot is a digital live album by U2 released through the iTunes Music Store on November 23, 2004 as part of the digital box set, "The Complete U2".  The show was recorded during U2's Lovetown Tour on New Year's Eve 1989 at the Point Depot in Dublin.  The show had an international live radio broadcast and became one of the most heavily bootlegged U2 shows of all time.  Fans were encouraged to tape a recording of the show, and issue #12 of U2's fan magazine "Propaganda" included a special cassette cover for those who taped the broadcast.

Bootlegged, Broke, and In Solvent Seas: Live: Bootlegged, Broke And In Solvent Seas is a live album by electro-industrial band Skinny Puppy.  It was recorded in Warsaw, Bratislava, Hildesheim, and Budapest, during the band's 2010 European tour and released on June 12, 2012 via Metropolis Records in the U.S.A. and in Germany via dependent on June 15, 2012

BBC Radio 1 Live in Concert (New Order album): BBC Radio 1 Live in Concert is a live album by the English band New Order.  The album is an edited recording of the band's headline performance at Glastonbury CND Festival '87.  It was first released as a live album in 1992.  The live album charted at number thirty-three on the UK Albums Chart and was certified as Silver (60,000 units sold) by the BPI.  The live album received mixed reviews and was first released as a LP, CD and Cassette in February 1992.  The live album was released in June 2000 with new artwork by The Peter Saville Studio with photography by Jon Wozencroft.  The original sleeve was designed by Mental Block.

Bootlegged in Japan: Bootlegged in Japan is a live album from British extreme metal band Napalm Death, released in June 1998 through Earache.

Live at Topanga Corral: Live at Topanga Corral is a 1971 live album by Canned Heat.  The album is taken from a 1969 concert at the Kaleidoscope in Hollywood, California and not at the Topanga Corral as the title suggests.  Canned Heat was under contract to Liberty Records at the time and Liberty did not want to do a live album, so manager Skip Taylor told Liberty that the album had been recorded in 1966 & 1967 at the Topanga Corral and released the record with Wand Records to avoid legal complications.  The record has been bootlegged and reissued countless times, and is also known as "Live at the Kaleidoscope".

Live from the Atlantic Studios: Live from the Atlantic Studios is a live album by AC/DC released on the "Bonfire" box set.  The album was recorded live at the Atlantic Recording Studios in New York, on 7 December 1977 and all tracks were remixed by George Young.  This was an official Radio Station/Promo release by Atlantic Records.  It was initially released on LP in 1978, and later on CD (1986).  AC/DC's performance was the first in a series of promotional concert-events for Atlantic Records acts.  Catalog # LAAS 001.  The CD version was officially released to fans in 1997 as part of the "Bonfire" collection.  Prior to that, this album was widely bootlegged among AC/DC fans.

Supporting paragraphs: Bootlegged in Japan Napalm Death
Answer: 1981