The jump from 4k to 16k in this chart is not "money printing" just change in definition of M1. M0 is FED balance sheet. M1 is M0+some other stuff. M2 is M1+some other stuff and supposes to be all the normal money in circulation.

(There was also M3 which was supposed to be M2+other stuff = all the money for real, but I heard FED gave up on that as bankers are pretty creative in money creation :D. )

You can see that M2 did not jump that much on that day (hence just definition change).

Better comparison to the roman situation would be "total public debt"

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This actually shows you the future as all public debt comes due some time and will have to be repayed (with even more debt usually..)