Found on the Soil and Health Library website:
The estimated calorie requirements of a resting man weighing 160 lbs., is 2200 calories. Sleeping twenty-four hours, this man would expend only 1680 calories. The calorie requirements of woman are estimated to be much lower–a seamstress requiring 1800 calories a servant 2800 calories and a wash-woman 3200 calories.
I have no idea when this quote was written, but I imagine that this calculation would probably hold true over the centuries, and would vary depending on the person’s age and size.