how to add NPS (new pension scheme) deduction amount need to add next month nps amount?

Hi All,

I have query  on NPS (new pension scheme) employee contribution to govt

How to add NPS deduction amount on every month while processing retro run?

For example

when processing retro run from 01.01.2016 to 30.04.2016 it need to display all months amount  in last  payslip?

01.01.2016 NPS amount is 1000

01.02.2016 NPS amount is  2000

.........

.....

01.04.2016 NPS Amount is 4000 need to display in april month of payslip?

can anyone please help me.