The Misery Index is the sum of the inflation, interest, and unemployment rates, minus the annual percentage change in per capita GDP. It provides a clear picture of the economic conditions facing Iranians.
Those data that are reported tend to possess what I've described as an "Alice in Wonderland" quality. In light of this, it is fair to suggest that any official data on Iran's inflation be taken with a grain of salt. So, how can this problem be overcome?