Experience show that the freer a central bank is form goverment interface,the lower is the rate of inflation.In a Harvard study,those countries whose central banks were less independent had an average inflation rate of 12.5เปอร์เซนต์ while those countries whose central banks were more independent had an average rate of 4เปอร์เซนต์ Moreover,countries with freer central banks also tended to have lower rates of unemployment This fits the theoty that independent banks are more sucessful in economic terms than banks which are open to goverment interference.