The central bank determines the amount of money to be printed that will be circulating in the system. According to an article written by Bajpai (2017), too many or too little money that are printed have an effect to both macro and micro economy that may eventuall affect the public in a positive or negative way. Decisions on printing money is not that easy. Right amount of money is very crutial to make the economy sustainable and healthy.

Source: https://www.investopedia.com/articles/investing/053115/how-central-banks-control-supply-money.asp