Less fortunate members of the society find that wage increases do not keep up with inflation, especially run-away rising inflation, and their savings and buying power deteriorate continuously.
To give an example: When we look at the balance sheet of a bank as reported to statistics, we know that it is precisely this data that is used to derive national and euro-zone money and credit aggregates, financial accounts referring to the banking sector, external positions, BIS locational banking statistics and so forth. This guarantees a high degree of consistency for analytical purposes.