Reporting on historic data

Reporting on historic data

Hi Support,
  Is it possible to historically report on the number of requests which were pending at a given point in time?
 
  I have to produce a Management report which tracks use of our system over the last 12 months and wanted to show the pending requests figure.  Whilst I can produce this as a current figure, I'm not able to do so historically from what  I can see.
 
Thanks in advance,
  Andy

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