It is an unstated central bank policy in many parts of the world to reduce the value of their currency to below its fair value. The reason for doing so is 'competitiveness'. A weaker currency means lower global prices for your goods and hence increases your exports, while at the same time reducing imports. Since a fundamental equation of economics says that GDP = C+I+G+X, or consumption plus investment plus government expenditure plus net exports; it would appear self evident that an increase in net exports would increase GDP.
This is, unfortunately, completely wrong. There are two ways that it is wrong, both pretty fundamental….Notes on the Next Bustprincipal at Dacharan Advisory AG, PhD. in Financial Mathematics