- Inflation - an increase in the general price level
- Deflation - a decrease in the general price level
The Price Indices used in the calculation of price level changes are:
- Consumer Price Index (CPI) - measures the price level by a monthly pricing of a specific set of goods/services purchased by a typical urban consumer.
- Gross Domestic Product Price Index (GDP Deflator) - includes the prices of all goods and services produced in the country. It includes investment, government purchases, exports, as well as consumer goods and services.
- Producer Price Index - measures the prices of specified commodities at the time of their first commercial sale.