Greg - I have the old Primus Micron, i.e. the one made of stainless steel, 3.5 oz. Otherwise, it is the same stove.
One an 8 day trip last year at elevations averaging 10,500' plus, 2 of us used slightly less than a 4 oz canister to heat, not boil, 48 oz of water/day for 7 full days plus one breakfast. That works out to about 5 grams of fuel/16 oz, if my math is correct. We used an Evernew 25 oz titanium pot without a windscreen, but made sure to heat our water in very protected places for near optimal conditions. Two other critical factors are prewarming the morning water by taking it to bed at night and not heating it to full boil, which is completely unnecessary, IMO, for most uses and incurs the energy penalty of latent heat of evaporation. We used our water only for drinks and somewhere in the neighborhood of 160 degrees was more than sufficient. This tracks with my previous experience, but is the only concrete example I can recall from my rapidly deteriorating memory bank. ;) I have found the Micron to be a great stove, and don't worry about its CO production because I don't cook in a tent. I have included a link to Will Rietveld's excellent review of the Micron for more typical fuel usage, as well as other characteristics of the stove.
Edited CO2 to CO.