Start of the period	End of the period	Due date
January	2011-01-01	2011-01-07	2011-01-12
	2011-01-08	2011-01-14	2011-01-19
	2011-01-15	2011-01-21	2011-01-26
	2011-01-22	2011-01-31	2011-02-03
February	2011-02-01	2011-02-07	2011-02-10
	2011-02-08	2011-02-14	2011-02-17
	2011-02-15	2011-02-21	2011-02-24
	2011-02-22	2011-02-28	2011-03-03
March	2011-03-01	2011-03-07	2011-03-10
	2011-03-08	2011-03-14	2011-03-17
	2011-03-15	2011-03-21	2011-03-24
	2011-03-22	2011-03-31	2011-04-05
April	2011-04-01	2011-04-07	2011-04-12
	2011-04-08	2011-04-14	2011-04-19
	2011-04-15	2011-04-21	2011-04-28
	2011-04-22	2011-04-30	2011-05-04
May	2011-05-01	2011-05-07	2011-05-11
	2011-05-08	2011-05-14	2011-05-18
	2011-05-15	2011-05-21	2011-05-26
	2011-05-22	2011-05-31	2011-06-03
June	2011-06-01	2011-06-07	2011-06-10
	2011-06-08	2011-06-14	2011-06-17
	2011-06-15	2011-06-21	2011-06-27
	2011-06-22	2011-06-30	2011-07-06
July	2011-07-01	2011-07-07	2011-07-12
	2011-07-08	2011-07-14	2011-07-19
	2011-07-15	2011-07-21	2011-07-26
	2011-07-22	2011-07-31	2011-08-03
August	2011-08-01	2011-08-07	2011-08-10
	2011-08-08	2011-08-14	2011-08-17
	2011-08-15	2011-08-21	2011-08-24
	2011-08-22	2011-08-31	2011-09-06
September	2011-09-01	2011-09-07	2011-09-12
	2011-09-08	2011-09-14	2011-09-19
	2011-09-15	2011-09-21	2011-09-26
	2011-09-22	2011-09-30	2011-10-05
October	2011-10-01	2011-10-07	2011-10-13
	2011-10-08	2011-10-14	2011-10-19
	2011-10-15	2011-10-21	2011-10-26
	2011-10-22	2011-10-31	2011-11-03
November	2011-11-01	2011-11-07	2011-11-10
	2011-11-08	2011-11-14	2011-11-17
	2011-11-15	2011-11-21	2011-11-24
	2011-11-22	2011-11-30	2011-12-05
December	2011-12-01	2011-12-07	2011-12-12
	2011-12-08	2011-12-14	2011-12-19
	2011-12-15	2011-12-21	2011-12-29
	2011-12-22	2011-12-31	2012-01-06