management 2019s discussion and analysis of financial condition and results of operations 2013 ( continued ) ( amounts in millions , except per share amounts ) liquidity and capital resources cash flow overview the following tables summarize key financial data relating to our liquidity , capital resources and uses of capital. .

Years ended December 31,
Cash Flow Data
2015
2014
2013
Net income, adjusted to reconcile net income to net cashprovided by operating activities<sup>1</sup>
$848.2
$831.2
$598.4
Net cash used in working capital<sup>2</sup>
(117.5)
(131.1)
(9.6)
Changes in other non-current assets and liabilities using cash
(56.7)
(30.6)
4.1
Net cash provided by operating activities
$674.0
$669.5
$592.9
Net cash used in investing activities
(202.8)
(200.8)
(224.5)
Net cash used in financing activities
(472.8)
(343.9)
(1,212.3)

1 reflects net income adjusted primarily for depreciation and amortization of fixed assets and intangible assets , amortization of restricted stock and other non-cash compensation , non-cash ( gain ) loss related to early extinguishment of debt , losses on sales of businesses and deferred income taxes .
2 reflects changes in accounts receivable , expenditures billable to clients , other current assets , accounts payable and accrued liabilities .
operating activities net cash provided by operating activities during 2015 was $ 674.0 , which was an improvement of $ 4.5 as compared to 2014 , primarily as a result of an improvement in working capital usage of $ 13.6 .
due to the seasonality of our business , we typically generate cash from working capital in the second half of a year and use cash from working capital in the first half of a year , with the largest impacts in the first and fourth quarters .
our net working capital usage in 2015 was primarily attributable to our media businesses .
net cash provided by operating activities during 2014 was $ 669.5 , which was an improvement of $ 76.6 as compared to 2013 , primarily as a result of an increase in net income , offset by an increase in working capital usage of $ 121.5 .
our net working capital usage in 2014 was impacted by our media businesses .
the timing of media buying on behalf of our clients affects our working capital and operating cash flow .
in most of our businesses , our agencies enter into commitments to pay production and media costs on behalf of clients .
to the extent possible , we pay production and media charges after we have received funds from our clients .
the amounts involved substantially exceed our revenues and primarily affect the level of accounts receivable , expenditures billable to clients , accounts payable and accrued liabilities .
our assets include both cash received and accounts receivable from clients for these pass-through arrangements , while our liabilities include amounts owed on behalf of clients to media and production suppliers .
our accrued liabilities are also affected by the timing of certain other payments .
for example , while annual cash incentive awards are accrued throughout the year , they are generally paid during the first quarter of the subsequent year .
investing activities net cash used in investing activities during 2015 primarily related to payments for capital expenditures of $ 161.1 , largely attributable to purchases of leasehold improvements and computer hardware .
net cash used in investing activities during 2014 primarily related to payments for capital expenditures and acquisitions .
capital expenditures of $ 148.7 related primarily to computer hardware and software and leasehold improvements .
we made payments of $ 67.8 related to acquisitions completed during 2014 , net of cash acquired. .

Question: Analyse this data from a financial earnings document. what is the cash flow statement effect of the change in cash used for working capital from 2013 to 2014?
Choices:
-121.5
-140.7
0
-117.5
140.7
Correct choice index: 0