CustomerID,InvoiceDate,Quantity,UnitPrice
1001,2024-01-10,2,250
1001,2024-03-15,3,300
1002,2024-02-01,1,500
1003,2024-01-25,5,120
1003,2024-04-10,2,150
1004,2024-02-12,1,800
1005,2024-03-20,4,90
1006,2024-03-25,2,400
1007,2024-01-05,3,110
1008,2024-04-01,6,75