Fine-grain static export of data?

[deklanw]

I have a statically exported page which displays a table component with data from getStaticProps. The table will have a dropdown with two options (by year) "2020" or "2019". The default view will be "2020"; most people will only need that data.

Is there a way to do this in a way that is both a static export and which doesn't download the "2019" data for every user, i.e. only grabbing it when they select it in the dropdown?

I realize I could use getStaticPaths, but that would generate a separate page with its own table component, right? That's not what I'm looking for.