Although SPAD had been successful, they were unable to keep up with demand and production of their later fighters was spread out among other aircraft manufacturers, including both direct competitors, as well as numerous companies that would become well known after the war. In 1916, over 98% of SPAD production came from SPAD and Blériot factories. By 1918, this had fallen to 43%, with the majority of SPAD XIII production from licensed manufacturers. SPAD designs accounted for around 20% of French aircraft produced during World War One.