in summary , our cash flows for each period were as follows : years ended ( in millions ) dec 30 , dec 31 , dec 26 .
[['years ended ( in millions )', 'dec 302017', 'dec 312016', 'dec 262015'], ['net cash provided by operating activities', '$ 22110', '$ 21808', '$ 19018'], ['net cash used for investing activities', '-15762 ( 15762 )', '-25817 ( 25817 )', '-8183 ( 8183 )'], ['net cash provided by ( used for ) financing activities', '-8475 ( 8475 )', '-5739 ( 5739 )', '1912'], ['net increase ( decrease ) in cash and cash equivalents', '$ -2127 ( 2127 )', '$ -9748 ( 9748 )', '$ 12747']]
operating activities cash provided by operating activities is net income adjusted for certain non-cash items and changes in assets and liabilities .for 2017 compared to 2016 , the $ 302 million increase in cash provided by operating activities was due to changes to working capital partially offset by adjustments for non-cash items and lower net income .tax reform did not have an impact on our 2017 cash provided by operating activities .the increase in cash provided by operating activities was driven by increased income before taxes and $ 1.0 billion receipts of customer deposits .these increases were partially offset by increased inventory and accounts receivable .income taxes paid , net of refunds , in 2017 compared to 2016 were $ 2.9 billion higher due to higher income before taxes , taxable gains on sales of asml , and taxes on the isecg divestiture .we expect approximately $ 2.0 billion of additional customer deposits in 2018 .for 2016 compared to 2015 , the $ 2.8 billion increase in cash provided by operating activities was due to adjustments for non-cash items and changes in working capital , partially offset by lower net income .the adjustments for non-cash items were higher in 2016 primarily due to restructuring and other charges and the change in deferred taxes , partially offset by lower depreciation .investing activities investing cash flows consist primarily of capital expenditures ; investment purchases , sales , maturities , and disposals ; and proceeds from divestitures and cash used for acquisitions .our capital expenditures were $ 11.8 billion in 2017 ( $ 9.6 billion in 2016 and $ 7.3 billion in 2015 ) .the decrease in cash used for investing activities in 2017 compared to 2016 was primarily due to higher net activity of available-for sale-investments in 2017 , proceeds from our divestiture of isecg in 2017 , and higher maturities and sales of trading assets in 2017 .this activity was partially offset by higher capital expenditures in 2017 .the increase in cash used for investing activities in 2016 compared to 2015 was primarily due to our completed acquisition of altera , net purchases of trading assets in 2016 compared to net sales of trading assets in 2015 , and higher capital expenditures in 2016 .this increase was partially offset by lower investments in non-marketable equity investments .financing activities financing cash flows consist primarily of repurchases of common stock , payment of dividends to stockholders , issuance and repayment of short-term and long-term debt , and proceeds from the sale of shares of common stock through employee equity incentive plans .the increase in cash used for financing activities in 2017 compared to 2016 was primarily due to net long-term debt activity , which was a use of cash in 2017 compared to a source of cash in 2016 .during 2017 , we repurchased $ 3.6 billion of common stock under our authorized common stock repurchase program , compared to $ 2.6 billion in 2016 .as of december 30 , 2017 , $ 13.2 billion remained available for repurchasing common stock under the existing repurchase authorization limit .we base our level of common stock repurchases on internal cash management decisions , and this level may fluctuate .proceeds from the sale of common stock through employee equity incentive plans totaled $ 770 million in 2017 compared to $ 1.1 billion in 2016 .our total dividend payments were $ 5.1 billion in 2017 compared to $ 4.9 billion in 2016 .we have paid a cash dividend in each of the past 101 quarters .in january 2018 , our board of directors approved an increase to our cash dividend to $ 1.20 per share on an annual basis .the board has declared a quarterly cash dividend of $ 0.30 per share of common stock for q1 2018 .the dividend is payable on march 1 , 2018 to stockholders of record on february 7 , 2018 .cash was used for financing activities in 2016 compared to cash provided by financing activities in 2015 , primarily due to fewer debt issuances and the repayment of debt in 2016 .this activity was partially offset by repayment of commercial paper in 2015 and fewer common stock repurchases in 2016 .md&a - results of operations consolidated results and analysis 37 .

Question: what was the percentage change in net cash provided by operating activities from 2015 to 2016?
Answer: 15%