Sales Summary

T

tsison7

I have a table with sales figures dated from 2005 to current. I'd like a
report to show the following:

Sales for each year 2005, 06, 07
Total of sales to date
Total of sales last month
Total of sales last 3 months

I can do the first 2 no problem but I would I incorporate sales over the
last n months?
 
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