yyyy/mm/dd,200602,200603
2006/01/04,57410,52870
2006/01/05,57410,52870
2006/01/06,57410,52870
2006/01/10,57410,52870
2006/01/11,57410,52870
2006/01/12,57410,52870
2006/01/13,57410,52870
2006/01/16,57410,52670
2006/01/17,57410,52700
2006/01/18,57410,52730
2006/01/19,57410,53930
2006/01/20,57410,55130
2006/01/23,57410,55130
2006/01/24,57410,55130
2006/01/25,57410,55130
2006/01/26,,55130
2006/01/27,,55130
2006/01/30,,55130
2006/01/31,,55130
yyyy/mm/dd,200603
2006/02/01,55280
2006/02/02,55280
2006/02/03,55280
2006/02/06,55280
2006/02/07,55280
2006/02/08,55280
2006/02/09,55280
2006/02/10,55280
2006/02/13,55280
2006/02/14,55280
2006/02/15,55280
2006/02/16,55280
2006/02/17,55280
2006/02/20,55280
2006/02/21,55280
2006/02/22,55280
2006/02/23,55280
2006/02/24,55280