"the Republic of the Marshall Islands has used the US dollar as money. Today we are progressing with our plan to issue a sovereign currency in digital form – using blockchain technology.
...
Our money supply will grow at a sustainable 4% each year, following Milton Friedman’s k% rule. New SOV will be automatically distributed to the currency holders and the decentralized entities securing the network. THIS MEANS THAT WE IN GOVERNMENT CANNOT MODIFY THE MONEY SUPPLY, AND WE CANNOT MANIPULATE THE VALUE OF OUR CURRENCY BY PRINTING MORE MONEY."

Source:
https://www.coindesk.com/why-the-marshall-islands-is-issuing-its-own-cryptocurrency


This is how all states should do and my idea would be achievable.