Exhibit 12.1

Ratio of Earnings to Fixed Charges and Preferred Share Dividends

(in thousands of U.S. dollars except ratios)

	Fiscal year ended December 31
	2009		2008		2007	2006		2005
Earnings per Financial Statements	$	2,548,929	$	1,197,065	2,578,098	$	2,305,169	$	1,028,241
Add (deduct):
Provision for income taxes		527,627		370,052	575,475		523,267		272,557
Fixed charges		252,782		255,704	198,722		199,811		201,885
Earnings for Computation	$	3,329,338	$	1,822,821	3,352,295	$	3,028,247	$	1,502,683
Fixed Charges
Interest Expense	$	224,858	$	230,030	174,870	$	175,698	$	174,029
One third of payments under operating leases		27,924		25,674	23,852		24,113		27,856
Total Fixed Charges	$	252,782	$	255,704	198,722	$	199,811	$	201,885
Ratio of Earnings to Fixed Charges		13.2		7.1	16.9		15.2		7.4
Preferred Share Dividends	$	—	$	23,921	44,851	$	44,851	$	44,850
Total Fixed Charges and Preferred Share Dividends	$	252,782	$	279,625	243,573	$	244,662	$	246,735
Ratio of Earnings to Fixed Charges and Preferred Share Dividends		13.2		6.5	13.8		12.4		6.1

⁽¹⁾ The Company recognizes accruals for interest and penalties, if any, related to unrecognized tax benefits in income tax expense (i.e. excluded from interest expense).