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Consolidated Statements Of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities
Net income	$ 74,280	$ 26,944
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization, including amounts in discontinued operations	75,130	71,555
Provision for losses on accounts receivable	3,009	3,319
Real estate impairment	599
Amortization of share grants, net	3,850	3,969
Amortization of debt premiums, discounts and related financing costs	2,644	4,576
Gain on sale of real estate	(56,639)	(7,942)
Loss on extinguishment of debt, net		280
Changes in operating other assets	(18,782)	(18,872)
Changes in operating other liabilities	2,296	(348)
Net cash provided by operating activities	86,387	83,481
Cash flows from investing activities
Real estate acquisitions, net	(281,701)	(68,000)
Net cash received for sale of real estate	289,221	22,204
Capital improvements to real estate	(18,117)	(14,569)
Development in progress	(12,128)	(1,174)
Non-real estate capital improvements	(442)	(256)
Net cash used in investing activities	(23,167)	(61,795)
Cash flows from financing activities
Line of credit borrowings	221,000	62,800
Line of credit repayments	(128,000)	(90,800)
Dividends paid	(86,190)	(80,387)
Distributions to noncontrolling interests	(151)	(137)
Proceeds from dividend reinvestment program	3,850	3,924
Principal payments - mortgage notes payable	(12,403)	(24,870)
Financing costs	(3,909)	(2,101)
Net proceeds from debt offerings		247,998
Net proceeds from equity offerings		118,068
Notes payable repayments, including penalties for early extinguishment	(96,521)	(8,843)
Net proceeds from exercise of share options	1,088	3,872
Net cash provided by and (used in) financing activities	(101,236)	229,524
Net increase (decrease) in cash and cash equivalents	(38,016)	251,210
Cash and cash equivalents at beginning of year	78,767	11,203
Cash and cash equivalents at end of period	40,751	262,413
Supplemental disclosure of cash flow information:
Cash paid for interest, net of amounts capitalized	$ 45,525	$ 46,078

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The component of interest expense representing the noncash expenses charged against earnings in the period to allocate debt discount and premium, and the costs to issue debt and obtain financing over the related debt instruments. Alternate captions include Noncash Interest Expense.

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