Crystal Reports Dynamic number of graphs based on input filter sel

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Hi all,
I have a below requirement, which has to be implemented in Crystal Reports 2008.

The number of graphs that report should return is dynamic based on the input filter selection. If the input period filter selection falls into ‘N’ years, the report should return ‘N’ graphical reports.

For example, the period  selected is 001.2010 to  004.2011 in the input prompt filter, the report would result in 2 graphical reports (one each for the Calendar years 2010 and 2011). Each graph shows monthly data..

Is there any possible way to achieve this..Please reply your valuable suggestions.

Thanks in advance..
Leela