An and example of an incremental incurred loss triangle.
IncrementalGeneralLiablityTriangleRows pertain to accident years; and columns pertain to development years. For this triangle accident years range from 1981 to 1990 and development years range from 1 to 10.
The triangle contains incurred incrementals of Automatic Facultative business in General Liability (excluding Asbestos & Environmental).
Historical Loss Development Study, 1991 edition, published by the Reinsurance Association of America (RAA), page 96. Quoted from, Thomas Mack (1995), "Which Stochastic Model is Underlying the Chain Ladder Method," Casualty Actuarial Society Forum, Fall 1995, pp. 229-240, http://www.casact.org/pubs/forum/95fforum/95ff229.pdf.