We have a number that describes this pretty good, and it' 6,5.

As in 6,5% less value per year.

It reflects the approximate average annual expansion of the supply of USD and EUR, which is about 7%.

For other currencies these numbers are higher.

Now, try to beat 6,5% per year by investing in stocks. Remember to subtract capital gains tax and all of the other costs you have when you invest. Including the value of your time working with the investments.

It's nearly impossible for ordinary people.

Nothing beats the money printer.