Exhibit 11

STATEMENT RE: COMPUTATION OF PER SHARE EARNINGS
(Amounts in thousands except per share data)
	For the Three Months Ended June 30,
		2002		2001
Numerator:
Net income available to common shareholders	$	19,437	$	19,160
Less: adjustment for gain (loss) on sales of investments in
rental properties available to common shareholders		-		-
Numerator for basic earnings per share-income from continuing
operations available to common shareholders		19,437		19,160
Effect of dilutive securities:
Minority interest in income convertible into common shares		788		884
Numerator for diluted earnings per share	$	20,225	$	20,044
Denominator:
Denominator for basic earnings per share – weighted average
shares		45,950		46,430
Effect of dilutive securities:
Weighted average convertible operating company units		1,630		1,900
Stock options		500		350
Dilutive potential common shares		2,130		2,250
Denominator for diluted earnings per share-adjusted for
weighted average shares and assumed conversion		48,080		48,680
Basic earnings per share excluding gain (loss) on sale	$	0.42	$	0.41
Diluted earnings per share excluding gain (loss) on sale	$	0.42	$	0.41
	For the Six Months Ended June 30,
		2002		2001
Numerator:
Net income available to common shareholders	$	39,635	$	36,820
Less: adjustment for gain (loss) on sales of investments in
rental properties available to common shareholders		-		-
Numerator for basic earnings per share-income from continuing
operations available to common shareholders		39,635		36,820
Effect of dilutive securities:
Minority interest in income convertible into common shares		1,587		1,768
Numerator for diluted earnings per share	$	41,222	$	38,588
Denominator:
Denominator for basic earnings per share – weighted average
shares		45,895		46,320
Effect of dilutive securities:
Weighted average convertible operating company units		1,630		1,960
Stock options		435		400
Dilutive potential common shares		2,065		2,360
Denominator for diluted earnings per share-adjusted for
weighted average shares and assumed conversion		47,960		48,680
Basic earnings per share excluding gain (loss) on sale	$	0.86	$	0.79
Diluted earnings per share excluding gain (loss) on sale	$	0.86	$	0.79