tiffix

i got this application that keeps adding member savings weekly and i need to display the current and previous savings totals info even after the members have made their savings. any ideas on how perharps i can organize my database or even handle this at php. currently am able to view the current outstandings which come as a result of overwriting the previous outstandings. if possible i need away to know show the previous outstandings even after one year of a particular date and still show the current outstandings