I wasn't sure where to put this topic... but I came across a news article about an online date company (Data is Beautiful) that created an animation representing the last 50 years of record industry sales data from the Recording Industry Association of America, the International Federation of the Phonographic Industry and record companies. It is interesting to watch.
https://www.cbc.ca/radio/q/blog/fascinating-animated-timeline-of-bestselling-music-from-past-50-years-goes-viral-watch-1.5351855