CORSIM is one of the early microsimulation models developed by the United States. It models individuals and their families, basic demographic characteristics of birth, death, marriage and divorce, emigration and immigration, as well as levels of education, economic patterns of work and earnings, the accumulation of assets and debts, and contributions to pensions. CORSIM is particular strong in terms of the link with social security program modelling. It was developed at Cornell University in 1987 and the latest version, CORSIM 4.1 was released in September 2002. It was used as a template for the development of Canadian microsimulation model DYNACAN, and the Swedish dynamic microsimulation model SVERIGE.