Linking the same chart to multiple worksheets

OK I realize I am probably going about this in the completely wrong way, but...I have a workbook that I use each year. It has grown considerably and has become pretty difficult to update for the next year. I am just using find/replace to change dates and formulas throughout, but have trouble with the charts. I have several charts which appear on more than one worksheet (the same chart on more than one page) in the workbook. I have to change the worksheets they are pulling data from for each chart for the new year because I am comparing data from the current year against the previous year. I want to only have to update each chart one time. Is there a way to link them to one set of charts so I only have to do this one time for each chart, or better yet is there a much better way to set this up so I don't have to waste so much time?

I hope this made some sense. Thanks for any help.