You've made a few basic fails: federal register is, well, only federal, so you've ignored all the non-federal ones. But then even at the federal level you've missed laws that contain the rules, and then the court decisions that directly impact how a rule is interpeted. And all that, of course, isn't enough, to understand them you'd also need to read professional literature that explains all of those rules.
Then the rules aren't static, so you'd need to print the full legal version for each change, so it wouldn't be neatly stuck into years, but more frequently.
Then there is the bigger elephant in the world - the actual world! Since you drain the whole wide world of blood, count all the rules that they produce out there.
Also, did you do math in JS wat to get
4.1 million pages * 1 liter per page = 115 liters (not million)
> about 40 years to
Then you've also forgotten to count all the future regulations