The sheer volume of data, combined with the high frequency with which it is collected, means that the standard verification process involving human beings is not feasible. Carrying out checks by algorithm, using machine learning techniques and artificial intelligence is one way of ensuring that data remain of high quality. The Eurosystem has a steep learning curve in front of itself.
Looking back, a clear trend towards lower inflation is discernible in Greece, with the CPI rate falling from 20.4% in 1990 to 2.6% in 1999. Inflation in Greece is now closer to a level which can generally be considered to be consistent with price stability.