exh12_a.htm

	12 Months Ended
	Dec. 31,		Dec. 31,			Dec. 31,			Dec. 31,			Dec. 31,			Dec. 31,
	2007		2006			2005			2004			2003			2002
	- Thousands of Dollars -
Fixed Charges:
Interest on Long-Term Debt	$	73,095	$	75,039		$	76,762		$	80,968		$	80,844		$	65,620
Other Interest (1)		5,480		7,922			3,153			1,947			3,709			2,123
Interest on Capital Lease Obligations		64,499		72,586			79,098			85,912			84,080			87,801
Total Fixed Charges		143,074		155,547			159,013			168,827			168,633			155,544

Net Income		58,373		67,447			46,144			45,919			113,941			34,928

Less:
Discontinued Operations - Net of Tax		-		(1,796	)		(5,483	)		(5,063	)		(7,472	)		(12,919	)
Extraordinary Income & Accounting Change -
Net of Tax		-		-			(626	)		-			67,471			-
Net Income from Continuing Operations		58,373		69,243			52,253			50,982			53,942			47,847

Add (Deduct):
(Income) Losses from Equity Investees		340		(210	)		(2,113	)		(7,121	)		3,051			3,047
Income Taxes		39,079		43,936			37,623			37,186			16,531			26,432
Total Fixed Charges		143,074		155,547			159,013			168,827			168,633			155,544

Total Earnings before Taxes
and Fixed Charges	$	240,866	$	268,516		$	246,776		$	249,874		$	242,157		$	232,870


Ratio of Earnings to Fixed Charges		1.684		1.726			1.552			1.480			1.436			1.497