Go to the web site of the Federal Reserve Bank of St. Louis (FRED) (fred. stlouisfed.org) and download and graph the growth rate for real GDP in Greece (GRCGDPRQPSMEI) from the first quarter of 2000 to the most recent quarter available. On the same graph download the growth rate for real GDP in Germany (NAEXKP01DEQ1895) for the same period. Note that to add the data for Germany to the graph for Greece, you will f irst need to click on “Edit Graph,” the click on “Add Data Series.” When you find the data series for real GDP for Germany, you will need to change the units to “ Percentage Change from Year Ago.” Briefly compare movements in the two series. What challenges do these movements in real GDP pose for the European Central Bank (ECB)?