[eddyg]

You can easily see the massive increase in savings in data from the Fed (for the U.S., at least):

https://fred.stlouisfed.org/graph/?g=ysLo

Typical growth in household checkable deposits/currency/savings deposits was around $500 billion/year during the mid-2010's. last year it was... $2.6 trillion

[bloopernova]

$2.6T... good lord. I wonder whether it will level off at $500B/y again?