I found the comment that linked the article where that graph appeared (https://www.ineteconomics.org/perspectives/blog/a-big-fiscal-push-is-urgent-the-risk-of-o

I found the comment that linked the article where that graph appeared (https://www.ineteconomics.org/perspectives/blog/a-big-fiscal-push-is-urgent-the-risk-of-overheating-is-small https://www.ineteconomics.org/perspectives/blog/a-big-fiscal...) to be a much more informative and useful reference.