Popularity of openings over time at master level and super-GM level

I calculated the frequencies of openings in top level classical games from 1990-2020. I made this calculation for master games (both players rated at least 2300) and for super-GM games (both players rated at least 2600). I considered questions such as: which Open Sicilian variations have been most popular over time? How have openings like the Queen's Indian changed in popularity? Are there differences in the opening choices of super-GMs compared to other masters?

For these questions and more, my report is available at:
https://github.com/PolyhedralPig/chess-openings/blob/master/README.pdf