Select 3 countries of your interest (excluding the US and Canada), collect their historical date on real GDP, GDP/capita, GDP growth rate, unemployment rate, the inflation rate, net export, and any other relevant data series spanning the last 30-50 years. Plot these data series of each country using graphs. (For data sources, check the lecture slides and try various links on the slides.) What do you learn about the economy of the selected countries? Write a brief summary？