For some modern historians the most important sentences are the couple that report the results of his censuses of Roman citizens, recording a total head count of 4,063,000 in 28 BCE, rising to 4,937,000 in 14 CE. These are the most reliable data we have for the size of the ancient Roman citizen body at any time, largely because, inscribed on stone, they are prone to none of the errors that careless manuscript copiers can easily introduce.
