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CONSOLIDATED BALANCE SHEETS (Parenthetical)	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
CONSOLIDATED BALANCE SHEETS
Partners' Capital, units outstanding	131,484	131,484	132,346	135,251

- Definition

The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners.

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