Four counts could do the same as eight," said Brenda Beadle, Deputy Douglas County Attorney.
A separate survey suggested that half of female runaways become prostitutes.
Ulsan, a manufacturing city, topped the list in the sex ratio with 105.
Reportedly, many female North Korean defectors are forced into prostitution, not only to pay the exorbitant fees charged by people-smugglers, but to earn a living in South Korea -- sometimes this scenario leads to tragic consequences.