Avg propane use per day when boondocking: 1/4 gal?

We fill our 40lb tank 2-3 times per year, usually just 2. We're fulltimers and cook a lot. In summer the usage is minimal, but we also usually have hookups during that period. In winter we boondock a lot and the furnace sucks it down in cold weather. Outside of the furnace use is minimal.