21% of All US Dollars Were Printed in 2020

More than $3 trillion has been created in 2020 alone, which means that almost 20 percent of all existing USD has been created this year
If the U.S. debt-to-GDP ratio remains distorted, that would ultimately be unsustainable, according to a Congressional Budget Office report.

How long the U.S. can sustain such growth in federal debt is impossible to predict with any confidence.