"New questions over time", I suppose, was the intended phrasing; and yes. Also, this is a new set of "rounds" it's making. Graphs like this have been getting s

"New questions over time", I suppose, was the intended phrasing; and yes. Also, this is a new set of "rounds" it's making. Graphs like this have been getting shopped around off and on for a few years now. Previous rounds of discussion famously include https://meta.stackoverflow.com/questions/433864 https://meta.stackoverflow.com/questions/433864 . The decline was even noted before ChatGPT, e.g. https://meta.stackoverflow.com/questions/413657 https://meta.stackoverflow.com/questions/413657.