year	month	time	sales
1	Jan	1	3394
1	Feb	2	4010
1	Mar	3	924
1	Apr	4	205
1	May	5	293
1	Jun	6	1130
1	Jul	7	1116
1	Aug	8	4009
1	Sep	9	5692
1	Oct	10	3458
1	Nov	11	2849
1	Dec	12	3470
2	Jan	13	456
2	Feb	14	3710
2	Mar	15	1675
2	Apr	16	999
2	May	17	986
2	Jun	18	1786
2	Jul	19	2253
2	Aug	20	5237
2	Sep	21	6679
2	Oct	22	4116
2	Nov	23	4109
2	Dec	24	5124