Yet, even when the central government was breaking down and unable to compile an accurate census of the population in the 9th century, it is estimated that the population had grown by then to about 80 million people.
Čak i kad je središnja vlast postupno oslabila tijekom 9. stoljeća i nije bila u mogućnosti napraviti točan popis stanovništva, ipak su procijenili da je broj stanovnika do tada narastao na otprilike 80 milijuna ljudi.