Month	National Currency
2011-01-01	160000000
2011-02-01	151000000
2011-03-01	163000000
2011-04-01	165000000
2011-05-01	167000000
2011-06-01	156000000
2011-07-01	174000000
2011-08-01	182000000
2011-09-01	162000000
2011-10-01	164000000