I tried a simplified Ecological Footprint calculator again, and got a number that seems a little low. (From more comprehensive calculators I have used in the past, I suspect that the number may be more in the 10-15 acre range.)
CATEGORY : ACRES
FOOD : 2.2
MOBILITY : 0.2
SHELTER : 1.2
GOODS/SERVICES : 1
TOTAL FOOTPRINT : 5
IN COMPARISON, THE AVERAGE ECOLOGICAL FOOTPRINT IN YOUR COUNTRY IS 24 ACRES PER PERSON.
WORLDWIDE, THERE EXIST 4.5 BIOLOGICALLY PRODUCTIVE ACRES PER PERSON.
IF EVERYONE LIVED LIKE YOU, WE WOULD NEED 1.1 PLANETS.