Update:
1989 (Adrian Smith: A.S.a.P - Silver and Gold; Bruce works on solo material; Iron Maiden: Maiden England)
1994 (search for new singer, recording of The X-Factor)
1997 (recording of Virtual XI)
2015 (work on and release of 16th album, treatment/recovery Bruce)
2015, for the first time in 18(!) years: the fourth -and most probably last- calendar year without Maiden concerts, before they break up.
H played Gangland.Not even a livestream of one single song.
Yes, these are the years without touring for Maiden (only 1989 and 1997 were years when they deliberately did nothing)
Even without touring, these years had big releases for the band - Maiden England video, Raising Hell video, TBOS album and NOTD live album (only the year 1997 was with no activity by the band)