Inflation figures are not useless. They are manipulated to achieve certain economic and/or political objectives.
Do you know the relationship between inflation and wage increment? Let me tell you. By publishing constantly low inflation figures, wage increment cannot go up too much. This is one of the ways to keep our foreign MNCs here. Unions cannot request for higher wages from companies if inflation is low. That's why you see that wage increment is around 2-3% over the years, in line with inflation.
However, in reality, inflation surpassed official figures.