The DEA model based on the data of  "Banking11by19939.dea" file has 19,939 DMUs with six inputs (last 6 columns) and five outputs (first 5 columns).

The data was extracted from "Call Reports" and contains US commercial-banks data.  

Source: Federal Financial Institutions Examination Council. 2004 Report of Condition and Income. 

 www.chicagofed.org/economic_research_and_data/commercial_bank_data.cfm.

The data originally appeared in SAS format on the Fed page and were obtained by Francisco J. Lopez in January 2004. They were given as a spreadsheet by L. Orea Universidad de Oviedo, Spain.