Issue with Dates

Author: contactashish13

samples/area.csv

@@ -1,7 +1,7 @@
 Month,Bolivia,Ecuador,Madagascar,Papua New Guinea,Rwanda
 string,number,number,number,number,number
-2004/05,165,938,522,998,450
-2005/06,135,1120,599,1268,288
-2006/07,157,1167,587,807,397
-2007/08,139,1110,615,968,215
-2008/09,136,691,629,1026,366
+2004/05/01,165,938,522,998,450
+2005/06/01,135,1120,599,1268,288
+2006/07/01,157,1167,587,807,397
+2007/08/01,139,1110,615,968,215
+2008/09/01,136,691,629,1026,366