A compact disc appears in 600 works. Concentric rings in 580. A target in 459.
Not a chronology — the dates in this archive are decade guesses. This is what actually recurs. Thirty-three elements, recombined across 992 works.
These motif tags are a machine's reading of each image, not the artist's words. That is also why they can be trusted more than the dates: you can check every one by looking. A dot ● marks a work that is a photographic composite — an assembled image, not documentation of a real exhibition.