How many calories remain in cooked Marsala wine?

Cynthia E asked:


I love making my fiance Stuffed Chicken Marsala, and he of course loves eating it. We are both trying to cut down calories.
My question is…If cooking the wine burns off the alcohol and most of the calories in wine come from the alcohol itself, then what percent of the calories get burned off?
If it helps, my method is I boil the Marsala wine all by itself with a rolling boil until it is reduced to about 1/3 of the orginal volume of liquid.