1) I don't think that graph is adjusted for inflation. 2) I haven't done it, but I'd be willing to put a few quid on the 1970s having the largest proportion of

1) I don't think that graph is adjusted for inflation. 2) I haven't done it, but I'd be willing to put a few quid on the 1970s having the largest proportion of albums in the best of lists e.g. http://www.rollingstone.com/music/lists/500-greatest-albums-of-all-time-20120531 http://www.rollingstone.com/music/lists/500-greatest-albums-... Also 1970s rockstars seemed to have a lot more money than their 2010s equivalents.