Annual Salary according pay periods

Hi All

I am new to USA payroll,Please give me some input on below query.

we have custom report which has different fields from payroll and benefits(USA).Currently annual salary field displays as per the date of report execution. But we want to make changes to this report, and new logic would be annual salary should display in the report as per the pay period.I have provided standard function module to our developer which pulls pay periods,here my question is where is integration/assignment between annual and pay periods.Please find below example.

Payroll area          Pay period start     pay period end   Annual Salary

BW(Bi-weekly)       01/01/2016             01/14/2016        50,000 USD

BW                        01/15/2016            01/31/2016         52,000 USD

BW                        02/01/2016             02/14/2016         54,000 USD

BW                         02/15/2016            02/28/2016          56,000 USD

From the above example,if i run report,for the 16th of Jan 2016, report should display annual salary amount as 52,000 USD not as 56,000 to achieve this do we have to do any configuration.

Thanks

shree