Current year and previous year data in same Bex report

BI Experts,

I have a requirement in BI 7.

Based on the input date in the query execution,

A BEX report should material price details for the current year and the previous year ?

For example if my input date is : 03.04.2012 then the report should display data from

01.01.2012 to 31.12.2012 and 01.01.2011 to 31.12.2011 .

Price ( this yearYYYY ) Price (YYYY -1 ) in the same report.

Please guide me the necessary procedures to get the output with the above condtions.

Thanks,

Abap Dev.