If so, can I ask a few questions?

How big is the heated square footage of your home?
How much oil do you use (typical winter or a typical winter month)?
Where do you live (for temperature comparisions)?
What temp is your thermostat set for?

I know how much the previous owners of our home used last winter, but they were old, they didn't use the wood stove even once (because their house was on the market) and I think they kept the place abnormally warm (we were sweating when we first saw the place last spring). We have used hardly ANY oil since October when we first fired up the furnace, so I don't know what is 'normal', you know? Based on how much we've used and how big our tank is, we now have enough oil to last us for the next 8 winters!? That can't be right.