The Statistical Yearbook is a collected volume (V to XIV editions) and was published after a ten-year break due to the World War I between 1915 and 1918. The hostilities and their aftermath were extremely unfavourable for Bulgarian statistics and only in 1924 it became possible to publish the Statistical Yearbook of the Bulgarian Kingdom. The information in the publication is structured in XXI sections on the principle of the previous four statistical yearbooks. The digital copy is in full-text format, in Bulgarian and French, and is available on the web.