How many is "Lots"?

Apparently the US doesn't keep records of this phenomenon that are easily accessible.

This article^ from 2017 says 1,000 Jewish Americans serve in the IDF.

Of the ~7,000,000 Jewish Americans, that's ~0.0143% of Jewish Americans serving in the IDF.

If 1,000 joined and served each year, and live to an average age of 70, doesn't that mean ~50,000 people? That would mean ~0.714% of Jewish Americans having served in the IDF.

^ https://www.thedailybeast.com/1000-americans-are-serving-in-...