Animated GIF Showing 40 Years of Music Industry Change

Someone created an animated GIF showing 40 years of changing formats in the music industry, from 1973 to the present.  It's interesting to see that by the early 1990's, both vinyl albums and singles had disappeared in favor of the CD format, but CD sales had not included any significant amount of CD singles.  This enabled the music industry to charge a full album price even if you only wanted one song.  By today, digital music sales of single songs claimed a significant percent of the music market.