Tyranny of numbers

The recent nationwide protests in Iran are the result of an accumulation of grievances, increasingly focused on what is commonly described as the “loss of value of the national currency.” This phrase is a familiar everyday lament among Iranians, who often equate the value of the rial—measured in U.S. dollars—with living standards. In doing so, they typically focus on the free-market exchange rate. Although this is a narrow market, it produces the most dramatic signal. The bulk of foreign exchange transactions take place at lower rates, but access to them is limited. The free-market rate, now around 1.3 million rials per dollar and averaging just under one million in the past month (see the blue line in Figure 1, left axis), is roughly 100 times its level when Obama-era sanctions took effect in late 2011.