The categories include/exclude rooftop/backyard?
Less than 300
More than 1600
2000 sq ft but then I live in the UK. One reason why returning to HK would be hard. Funny how you get to think that a shoebox is normal.
That meaningless worldwide average you casually refer to is also known as normal, the usual, or typical for the world we live in...Meaningless to compare a Soweto slum dweller to a Western expat to a Australian farmer to a Dutch prince. Peoples past experiences define what is normal to them, not a meaningless worldwide average.
You think normal is a mean average across 6 billion people, that is priceless - even for you *smile*
Since you find such statistics amusing, here are some more to help you get thru the weekend:
Here, a picture to make it even more amusing, just for you: