Hi Raghu,
As part of reverse business engineering, Basis team can help you on this.
Get in touch with Basis team if they can give you a extract of data, provided, they saved somewhere:-)
To do such such analysis, you will need data of atleast one year, because there are transactions which are used very seldom by business, e,g monthend t-codes, year end closing t-codes etc.
Thanks,
Uttam