You don't include amounts in escrow that were refunded to you on your tax return.
This is just an amount the lender's collect to make payments on your behalf. Lenders often collect more than what is needed to pay your insurance and property taxes.
This is a cushion in order to meet the fluctuations that occur year to year for your tax and insurance bill.
http://finance.zacks.com/claim-escrow-surplus-check-taxes-6151.html