grouping a columns monthly,quaterly and yearly in a table

Migrateduser

<p>I have a requirement in a report to  forecast of all the producers on monthly basis for the first year, quarterly basis for the next two years and yearly basis for the remaining five years.Attaching sample screenshot of requirement.</p>
<p>Any help plss...</p>
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<p>Thanks and Regards,</p>
<p>Tejasri</p>