Evaluation of Methods for Calculating Symmetric Input-Output Tables with Emphasis on Different Conceptions of Technology Presumptions in Iran

Using different technology presumptions by Central Bank and Statistical Center of Iran in designing symmetric tables has confused the users. Users have two solutions for this problem: using the symmetric tables irrespective of the technology presumptions in different economic areas or calculating them based on make-use matrices proportionality to specific goals before using. The article addresses the later. Eight symmetric tables are calculated based on last aggregated statistical make-use matrices designed by Central Bank and Statistical Center of Iran in 1999 and 2001 and are compared with the present tables emphasizing the production structure of petroleum and natural gas. Findings of the research reveal that all elements of the mentioned tables are meaningful and should not easily be modified and removed.