Condensed statement of financial position and income statement data for Pembina Ltd. are shown below

Statement of financial position
		2018		2017		2016
Assets
Current assets
Cash		$28		$81		$200
Accounts receivable		908		707		497
Inventory		1,188		794		504
Total current assets		2,124		1,582		1,201
Property, plant, and equipment (net)		4,076		3,778		3,195
Total assets		$6,200		$5,360		$4,396
Liabilities and Shareholders Equity
Liabilities
Current liabilities		$600		$553		$497
Non-current liabilities		3,042		2,330		1,491
Total liabilities		3,642		2,883		1,988
Shareholders equity
Common shares		996		996		996
Retained earnings		1,562		1,481		1,412
Total shareholders equity		2,558		2,477		2,408
Total liabilities and shareholders equity		$6,200		$5,360		$4,396

Income Statement		2018		2017		2016
Sales (all on credit)		$4,505		$4,019		$3,574
Cost of goods sold		2,483		2,109		1,797
Gross profit		2,022		1,910		1,777
Operating expenses		1,438		1,479		1,492
Income from operations		584		431		285
Interest expense		190		131		70
Income before income tax		394		300		215
Income tax expense		99		75		54
Net income		$295		$225		$161

Calculate the return on common shareholders equity for each year. Assume that common shareholders equity at the end of 2015 was equal to that amount for 2016. (Round answers to 1 decimal place, e.g. 5.2%.)

Return on common shareholders equity 2016 2017 2018

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