Research the causes of related medical symptoms such as: 1  Mouth. 2  Mouth symptoms (6864 causes). 3  Mouth disease. 4  Mouth disorder. 5  Mouth pain (142 causes). 6  Ulcers (28 causes).
The most important measure of economic activity in a country, the Gross Domestic Product is the crossing point of three sides of the economy: expenditure, output, and income. As a measure of well-being of a country for international and temporal comparisons, it provides a good first approximation.
Measures of productivity growth constitute core indicators for the analysis of economic growth. However, there are many different approaches to productivity measurement and their calculation and interpretation requires careful consideration, in particular when undertaking international comparisons.