Since 1921, the FIE championships have occurred annually except for an interruption forced by World War II from 1939 to 1946 and in some of the years when the Summer Olympics are held. The fencing competitions at the Summer Olympics have served as the World Championships of the year for the relevant events. Since 1932, World Championships have been held during the Olympic years only for those events not being held during that year's Summer Olympics. For the years 1932, 1936, 1948, 1952, and 1956, World Championships were held only in Women's Foil Team since that event was not on the Olympic program during those years. After this event was added to the Olympic program beginning with the 1960 Olympics, the FIE stopped holding World Championships during the Olympic years until 1988 when women's épée individual and women's épée team events were added to the World Championship program but the IOC declined to add these events to the Olympic program. A World Championship in these two events was again held in 1992 for the same reason. Finally, in 1996 the IOC added these two events to the Olympic program and the FIE again stopped holding a World Championship in an Olympic year.