Exhibit 99.1

SELECTED QUARTERLY FINANCIAL INFORMATION

(Unaudited)

Selected quarterly information for the years ended December 31, 2010 and 2009 is as follows (in thousands, except per unit amounts):

	Quarter Ended
2010	December 31			September 30			June 30			March 31
Rental and related revenue	$	228,868		$	230,781		$	206,351		$	212,242
General contractor and service fee revenue		100,971			132,351			168,398			113,641
Net income (loss) attributable to common unitholders	$	9,752		$	35,105		$	(43,603	)	$	(15,713	)
Basic income (loss) per Common Unit	$	0.04		$	0.13		$	(0.19	)	$	(0.07	)
Diluted income (loss) per Common Unit	$	0.04		$	0.13		$	(0.19	)	$	(0.07	)
Weighted average Common Units		257,420			257,383			233,486			230,760
Weighted average Common Units and potential dilutive securities		257,420			257,383			233,486			230,760
2009	December 31			September 30			June 30			March 31
Rental and related revenue	$	213,542		$	210,935		$	210,316		$	207,438
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	)(1)	$	(33,457	)(2)	$	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

(1) Amount includes $284.8 million of non-cash impairment charges.

(2) Amount includes $17.7 million of non-cash impairment charges.