1914 Ottoman census
The 1914 Ottoman census was collected and published as the Memalik-i Osmaniyyenin 1330 Senesi Nütus Istatistiki. These statistics were prepared by using the figures from the 1905–06 census of the Ottoman Empire and reflecting births and deaths registered in six years from last. The register states that birth and mortality rate used on "nomads" such as the nomadic Nestorians. The 1914 census list reflected major changes in the territorial boundaries and administrative division of the Ottoman state. The population statistics and 1914 Ottoman general election were major population sources. The empire's total population was provided as 18,520,015. The grand total for 1914 showed a "net gain" of 1,131,454 from the 1905-06 Ottoman census survey. The data reflects the loss of territory and population in Europe due to Balkan Wars, as the total net gain figure would be 3,496,068. The census underestimated non-Muslim populations. For example, in Diyarbekir the Armenian population was reported at 73,226 in the 1914 Ottoman census, but in September 1915 Mehmed Reshid announced that he had deported 120,000 Armenians from the province. Census data As a result of the substantial territorial losses in Europe suffered during the Balkan Wars, the total population of the empire fell to