Briefly introduce the changes in the Swedish Krone from the fixed exchange rate time to the present (2018), using a simple regression model to interpret the relationship between import+export over GDP and the Swedish krona exchange rate (for the euro, before the 2002 German Mark) and other control variables （create a dummy for Euro before and after）. Analyze the impact of variables such as exchange rates on their imports and exports. The exchange rate may use REER. Others see attachments and future contact
