Chenier, the calculation was done for cities, doesn't matter which continent it's on, cities have similar stats.
Sure, you can argue all you want that additional gold generated by additional population must go somewhere else. When it comes down to it, you're expecting to do everything with a city when it is in an area with a low access to supplies of surplus food as when it is in an area with tons of surplus food.
By the way, by data I meant population, food consumption, production, gold values, tax rates, that kind of thing. Surely that data cannot be lost?