From research generously provided by historian Andy Slade.
Andy has collated his research from CWGC public data sources.
The casualties include all those listed as war casualties, from all theatres and all arms.
The graphs are interactive, so you can look at shorter periods of the conflict. NB: the graphs use the Flash plugin to your browser, so will not be visible on certain iOS devices such as Apple iPads.
Graph 1: casualties day by day throughout the war (to be added to throughout the centenary)
Graph 2: 1914 casualties, with annotations
Graph 3: 1915 casualties, with annotations
Image: "Bundesarchiv Bild 102-00169A, Westfront, Abgeschossener englischer Flieger" by Unknown - This image was provided to Wikimedia Commons by the German Federal Archive (Deutsches Bundesarchiv) as part of a cooperation project. The German Federal Archive guarantees an authentic representation only using the originals (negative and/or positive), resp. the digitalization of the originals as provided by the Digital Image Archive.. Licensed under CC-BY-SA-3.0-de via Wikimedia Commons.