What is a Social Accounting Matrix (SAM)? (PDF 125K) This is a full regional SAM for the year 2002 and was developed as an input to a regional CGE model developed to analyze regional development strategies. The country was divided into three regions, Costa, Sierra, and Selva. The regional disaggregation relied on a nine sector estimate of regional production from the Peruvian Census Bureau (INEI) regional tax and expenditure date r eported by the Peruvian Ministry of Finance and the United National Development Program. We used regional employment data to estimate sectoral production levels by region at a greater level of disaggregation than the nine sectors reported in the INEI data. The same household surveys gave us an estimate of househo...