“…There have been significant contributions on productivity indicators in various economic sectors in the world (Akbari, 2010;Rezai et al, 2009;Tehrani & Khojasteh, 2008;Etmady et al, 2009;Baharestan, 2007;Sinai & Ahmadi, 2003;Eling & Michael, 2009;Rudolf & Zurlinden, 2009;Van der Eng, 2009;Lopez & Chacon, 2009;Vial, 2008;Davis & Madsen, 2008;Brown & Rowe, 2007). However, to the best of our knowledge, no research has been associated with the proposed study of this paper.…”