They don't! It's a huge problem! It's probably the problem in US health care, which, despite my own belief that single-payer is bad policy, is in fact a total shitshow.
It's really easy now with Claude and GPT5; just ask them a question and tell them to answer it for you, with cites, from the NHE. (The data I argue from precedes widespread LLM research; I built a site for this a couple years ago and didn't bother to update my data, because I assume it didn't get much better.)
https://www.cms.gov/data-research/statistics-trends-and-repo...