You are given the following balance sheets.

	2016			2017
Assets
Cash	$	101		$	128
Other current assets		289			307
Net fixed assets		624			631
Total assets	$	1,014		$	1,066
Liabilities and Equity
Accounts payable	$	123		$	118
Long-term debt		306			302
Stockholders equity		585			646
Total liabilities and equity	$	1,014		$	1,066

What is the change in the net working capital from 2016 to 2017?