Exhibit 99.1

SELECTED QUARTERLY FINANCIAL INFORMATION

(Unaudited)

Selected quarterly information for the years ended December 31, 2009 and 2008 is as follows (in thousands,
except per unit amounts):



|                                                                                |  |               |         |     |              |   |          |         |  |   |          |      |  |   |        
|------------------------------------------------------------------------------- |  | ------------- | ------- | --- | ------------ | - | -------- | ------- |  | - | -------- | ---- |  | - | -------
|                                                                                |  | Quarter Ended
|2009                                                                            |  | December 31   |         |     | September 30 |   |          | June 30 |  |   | March 31
|                                                                                |  |               |         |    
|Rental and related revenue                                                      |  | $             | 226,098 |     |              | $ | 223,349  |         |  | $ | 224,699  |      |  | $ | 220,434
|General contractor and service fee revenue                                      |  |               | 114,097 |     |              |   | 100,880  |         |  |   | 129,444  |      |  |   | 105,088
|Net income (loss) attributable to common unitholders                            |  | $             | (3,122  | )   |              | $ | (332,428 | )(2)    |  | $ | (33,457  | )(3) |  | $ | 24,307 
|Basic income (loss) per Common Unit                                             |  | $             | (0.02   | )   |              | $ | (1.44    | )       |  | $ | (0.16    | )    |  | $ | 0.15   
|Diluted income (loss) per Common Unit                                           |  | $             | (0.02   | )   |              | $ | (1.44    | )       |  | $ | (0.16    | )    |  | $ | 0.15   
|Weighted average Common Units                                                   |  |               | 230,629 |     |              |   | 230,599  |         |  |   | 214,015  |      |  |   | 155,254
|Weighted average Common Units and potential dilutive securities                 |  |               | 230,629 |     |              |   | 230,599  |         |  |   | 214,015  |      |  |   | 155,747
|Consolidated basic Funds from Operations attributable to common unitholders (1) |  | $             | 77,330  |     |              | $ | (236,238 | )       |  | $ | 61,563   |      |  | $ | 110,614
|                                                                                |  |               |         |    
|2008                                                                            |  | December 31   |         |     | September 30 |   |          | June 30 |  |   | March 31
|                                                                                |  |               |         |    
|Rental and related revenue                                                      |  | $             | 219,824 |     |              | $ | 215,002  |         |  | $ | 211,361  |      |  | $ | 211,372
|General contractor and service fee revenue                                      |  |               | 162,777 |     |              |   | 93,316   |         |  |   | 94,248   |      |  |   | 84,283 
|Net income attributable to common unitholders                                   |  | $             | 21,305  | (4) |              | $ | 12,287   |         |  | $ | 17,361   |      |  | $ | 2,712  
|Basic income per Common Unit                                                    |  | $             | 0.13    |     |              | $ | 0.08     |         |  | $ | 0.11     |      |  | $ | 0.02   
|Diluted income per Common Unit                                                  |  | $             | 0.13    |     |              | $ | 0.08     |         |  | $ | 0.11     |      |  | $ | 0.02   
|Weighted average Common Units                                                   |  |               | 154,914 |     |              |   | 154,604  |         |  |   | 154,425  |      |  |   | 154,189
|Weighted average Common Units and potential dilutive securities                 |  |               | 154,914 |     |              |   | 154,836  |         |  |   | 154,624  |      |  |   | 154,596
|Consolidated basic Funds from Operations attributable to common unitholders (1) |  | $             | 109,680 |     |              | $ | 100,506  |         |  | $ | 91,088   |      |  | $ | 87,591 



|(1) | Funds From Operations (FFO) is used by industry analysts and investors as a supplemental operating performance measure of an equity real estate investment
trust (REIT) like our General Partner. The National Association of Real Estate Investment Trusts (NAREIT) created FFO as a supplemental measure of REIT operating performance that excludes historical cost depreciation, among
other items, from net income determined in accordance with accounting principles generally accepted in the United States of America (GAAP). FFO is a non-GAAP financial measure. The most comparable GAAP measure is net income (loss)
attributable to common unitholders. FFO attributable to common unitholders should not be considered as a substitute for net income (loss) attributable to common unitholders or any other measures derived in accordance with GAAP and may not be
comparable to other similarly titled measures of other companies. FFO is calculated in accordance with the definition that was adopted by the Board of Governors of NAREIT.
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Historical cost accounting for real estate assets in accordance with GAAP implicitly assumes that the value of real estate assets diminishes
predictably over time. Since real estate values instead have historically risen or fallen with market conditions, many industry analysts and investors have considered presentation of operating results for real estate companies that use historical
cost accounting to be insufficient by themselves. FFO, as defined by NAREIT, represents GAAP net income (loss), excluding extraordinary items as defined under GAAP and gains or losses from sales of previously depreciated real estate assets, plus
certain non-cash items such as real estate asset depreciation and amortization, and after similar adjustments for unconsolidated partnerships and joint ventures.

Management believes that the use of consolidated basic FFO attributable to common unitholders, combined with net income (which remains the primary measure of performance), improves the understanding of
operating results of REITs among the investing public and makes comparisons of REIT operating results more meaningful. Management believes that, by excluding gains or losses related to sales of previously depreciated real estate assets and excluding
real estate asset depreciation and amortization, investors and analysts are able to readily identify the operating results of the long-term assets that form the core of a REITs activity and assist in comparing these operating results between
periods or as compared to different companies.



|(2) | Amount includes $285.2 million of non-cash impairment charges.
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|(3) | Amount includes $17.9 million of non-cash impairment charges.
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|(4) | Amount includes a $14.0 million gain on the repurchase of Preferred Units and $11.4 million of non-cash impairment charges on undeveloped land and buildings.
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