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Tenant Concentration
12 Months Ended
Dec. 31, 2011
Tenant Concentration  
Tenant Concentration

Note 13. Tenant Concentration

        During 2011 and 2010, no one tenant is responsible for more than five percent of our revenues. Prior to 2010, the United States Government was our only tenant responsible for more than five percent of our revenues. For the year ended December 31, 2009, revenues from the United States Government were $78,534.