Volvo - Loaner/Demo

Interested in the Volvo XC60 and V60 cross country. I’ve noticed the dealers around me (Philadelphia) have a good supply of loaners/demo cars on the lot. Is there a baseline discount off of MSRP for a loaner/demo that I should consider to start the negotiation process? How much does that baseline change based on model year (2019 versus 2020)? Thanks!