"The website at www.citypopulation.de/Cambodia.html lists the population of Cambodia at 13,388,910 for 2009. Using United Nations estimates of 1 person out of every 1,000 person born profoundly deaf or becoming profoundly deaf at an early age, there would be an estimate of 13,389 deaf people living in Cambodia. Assuming that most Cambodian deaf people attended school and assuming that they had opportunities of interacting frequently with other deaf people, a reasonable estimate of users of CBDSL would be up to 13,000 users. The situation in Cambodia, however, is one in which many deaf people are isolated. The Deaf Development Programme in Cambodia estimates that 1,500 deaf people in Cambodia may use CBDSL."