Years ende d
December 31 ,	SAR S	Option s
Exercise pric e
201 7	$16.97	$16.97	-	$21.6 3
201 6	$16.35	$16.35	-	$18.5 5
201 5	$18.66	$16.78	-	$18.6 6

Market pric e
201 7	$16.97	$16.97	-	$21.6 3
201 6	$16.35	$16.35	-	$18.5 5
201 5	$18.66	$16.78	-	$18.6 6
Risk free interest rate 1
201 7	1.9%	1.8%	-	2.4%
201 6	1.3%	1.1%	-	1.8%
201 5	1.5%	1.5%	-	2.1%
Expected award life (years) 2	5	5	-	10

Expected volatility 3
201 7	36.6%	36.6%	-	41.4%
201 6	36.5%	36.5%	-	40.3%
201 5	34.9%	34.9%	-	39.0%
Expected dividend yield 4
201 7	2.1%	1.8%	-	2.1%
201 6	2.0%	1.8%	-	2.1%
201 5	1.6%	1.6%	-	1.9%

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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