Today's New York Times includes an article reporting on the macroeconomic conditions in Iran, which are mixed. Back in February, the New Yorker ran an article about economics in Iran.
As forecast by the IMF, Iranian GDP growth in 2009 sounds relatively high at 3.2 percent. But population growth is around 1.5 percent, dragging per capita income growth down to 1.7.
Inflation has been a larger concern for some time. The Iranian Central Bank reports CPI inflation running 15.5% over a year earlier. I think the Times article cites the difference between annual averages in (roughly) 2007 and 2008, which is a figure more like 25.4%, up from 18.4% the previous year.
The last time inflation approached 20% was in the U.S. was in early 1947.