Political upheaval and instability can have a negative impact on a nation's economy. The rise of a political faction that is perceived to be fiscally responsible can have the opposite effect. Also, events in one country in a region may spur positive or negative interest in a neighboring country and, in the process, affect its currency.

On the chart this is price level under the market where buying interest is sufficiently strong to overcome selling pressure.

Each month approximately 100,000 prices are collected from 30,000 production and manufacturing firms for PPI. It is not as strong as the CPI in detecting inflation, but because it includes goods being produced, it is often a forecast of future CPI releases.