I don't think you should base your career decisions primarily on economic demand (won't delve into reasons for the sake of brevity), but for what it's worth you should be able to easily find data. Just google "[university name] salaries and destinations" for a university you think you might be attending. Most American and Canadian universities are good at posting this data, although almost all of them are slacking off when it comes to completeness.
For example, here's Berkeley's from 2017: https://career.berkeley.edu/Survey/Survey
For history, specifically: https://career.berkeley.edu/sites/default/files/pdf/Survey/2017History.pdf
You can find what sorts of jobs people are going into, how much they're making, what percent are going to grad school (and what sorts of grad schools they're headed to). I specifically recommend the college-specific datasets as there's a ton
of variance between colleges (where you go to school does
matter a lot when it comes to immediate post-grad career opportunities- and you can easily see it in the data).
Sometimes it's challenging to find this data (universities are pretty spotty, especially when they're not that well-known)- third-party sources like payScale and LinkedIn aren't that bad. https://www.payscale.com
Again, you shouldn't tailor your passions to your perception of what the economy values (and if you do, you shouldn't just use US-wide averages that don't account for differences in geographic distribution, educational quality between programs, etc.). But while your college major isn't a lifelong sentence, it still is a major life decision you'll have to make not that far down the road- and so it's best to check all of your assumptions with the crazy amount of data that's out there.