Hi!
I'd say they want to know how much money you estimate that you'll need from loans each year. This could be pretty hard, especially when you have no idea if you will be admitted with some kind of scholarship. What I did was allocating 80% of the money I'll have available at matriculation for first year expenses and partial payment of tuition. The rest of my money would go towards second year expenses or partial payment of tuition.
If you detract that amount from the annual estimated cost of the MBA at Simon, you should have an approximate figure of the money you'll need each year. Then just write the number that money represents of the total annual cost of the MBA, and you should have it

I also took into account some sort of partial scholarship since, given a couple of decisions that I have already recieved, I don't think I'd attend Simon without any scholarship money in case I'm admitted.
This figures should not play any part on the adcom admittance decision. But that's just my opinion, and I'd suggest to be honest throughout the whole process and a little bit more conservative when answering this questionnaire (meaning that I'd right a slightly higher number than the funding you actually think you'll need).
Best rgds,
kheown