Google has offered this feature that shows you your past searches, including being able to see your related activity searches from the Google Search results. Now, it seems, Google added a chart to show that search activity over time.
I am not 100% sure if this is new, but Vijay Chauhan thinks so and he shared examples of it on X - here is the chart added to the top of this feature:
I think the chart part is new, the other aspects are not new.
Forum discussion at X.
