ended December 31, 2015 and 2014, respectively.
The increase in cash provided by accounts payable-inventory financing was primarily due to a new vendor added to our previously existing inventory financing agreement.
For a description of the inventory financing transactions impacting each period, see Note 6 (Inventory Financing Agreements) to the accompanying Consolidated Financial Statements.
For a description of the debt transactions impacting each period, see Note 8 (Long-Term Debt) to the accompanying Consolidated Financial Statements.
Net cash used in financing activities decreased $56.3 million in 2014 compared to 2013.
The decrease was primarily driven by several debt refinancing transactions during each period and our July 2013 IPO, which generated net proceeds of $424.7 million after deducting underwriting discounts, expenses and transaction costs.
The net impact of our debt transactions resulted in cash outflows of $145.9 million and $518.3 million during 2014 and 2013, respectively, as cash was used in each period to reduce our total long-term debt.
For a description of the debt transactions impacting each period, see Note 8 (Long-Term Debt) to the accompanying Consolidated Financial Statements.
Long-Term Debt and Financing Arrangements As of December 31, 2015, we had total indebtedness of $3.3 billion, of which $1.6 billion was secured indebtedness.
At December 31, 2015, we were in compliance with the covenants under our various credit agreements and indentures.
The amount of CDW’s restricted payment capacity under the Senior Secured Term Loan Facility was $679.7 million at December 31, 2015.
For further details regarding our debt and each of the transactions described below, see Note 8 (Long-Term Debt) to the accompanying Consolidated Financial Statements.
During the year ended December 31, 2015, the following events occurred with respect to our debt structure: ?
On August 1, 2015, we consolidated Kelway’s Term Loan and Kelway’s Revolving Credit Facility.
Kelway’s Term Loan is denominated in British Pounds.
The Kelway Revolving Credit Facility is a multi-currency revolving credit facility under which Kelway is permitted to borrow an aggregate amount of ￡50.0 million ($73.7 million) as of December 31, 2015.  ?
On March 3, 2015, we completed the issuance of $525.0 million principal amount of 5.0% Senior Notes due 2023 which will mature on September 1, 2023.  ?
On March 3, 2015, we redeemed the remaining $503.9 million aggregate principal amount of the 8.5% Senior Notes due 2019, plus accrued and unpaid interest through the date of redemption, April 2, 2015.
Inventory Financing Agreements We have entered into agreements with certain financial intermediaries to facilitate the purchase of inventory from various suppliers under certain terms and conditions.
These amounts are classified separately as accounts payable-inventory financing on the Consolidated Balance Sheets.
We do not incur any interest expense associated with these agreements as balances are paid when they are due.
For further details, see Note 6 (Inventory Financing Agreements) to the accompanying Consolidated Financial Statements.
Contractual Obligations We have future obligations under various contracts relating to debt and interest payments, operating leases and asset retirement obligations.
Our estimated future payments, based on undiscounted amounts, under contractual obligations that existed as of December 31, 2015, are as follows:
## Table 0 ##
ES TO CONSOLIDATED FINANCIAL STATEMENTS 90 Selected Segment Financial Information Information regarding the Company’s segments for the years ended December 31, 2015, 2014 and 2013 is as follows:
## Table 1 ##
(1) Includes $75.0 million of IPO- and secondary-offering related expenses, as follows: Corporate $26.4 million; Public $14.4 million; Other $3.6 million; and Headquarters $30.6 million.
For additional information relating to the IPO- and secondary-offering, see Note 10 (Stockholders’ Equity).
Geographic Areas and Revenue Mix The Company does not have Net sales to customers outside of the U. S.  exceeding 10% of the Company’s total Net sales in 2015, 2014 and 2013.
The Company does not have long-lived assets located outside of the U. S.  exceeding 10% of the Company’s total long-lived assets as of December 31, 2015 and 2014, respectively.
The following table presents net sales by major category for the years ended December 31, 2015, 2014 and 2013.
Categories are based upon internal classifications.
Amounts for the years ended December 31, 2014 and 2013 have been reclassified for certain changes in individual product classifications to conform to the presentation for the year ended December 31, 2015.
## Table 2 ##
(1) Includes items such as delivery charges to customers and certain commission revenue.17.
Supplemental Guarantor Information The 2022 Senior Notes, the 2023 Senior Notes and the 2024 Senior Notes are, and, prior to being redeemed in full, the 2019 Senior Notes, the 12.535% Senior Subordinated Exchange Notes due 2017, and the 8.0% Senior Secured Notes due 2018 were guaranteed by Parent and each of CDW LLC’s direct and indirect, 100% owned, domestic subsidiaries
PART II Item 5.
Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities Market Information Our common stock has been listed on the Nasdaq Global Select Market since June 27, 2013 under the symbol “CDW.
” The following table sets forth the ranges of high and low sales prices per share of our common stock as reported on the Nasdaq Global Select Market and the cash dividends per share of common stock declared for the two most recent fiscal years.

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Payments Due by Period
(in millions)	Total	< 1 year	1-3 years	4-5 years	> 5 years
Term Loan-1	$1,703.4	$63.9	$126.3	$1,513.2	$—
Kelway Term Loan-1	90.9	13.5	77.4	—	—
Senior Notes due 2022-2	852.0	36.0	72.0	72.0	672.0
Senior Notes due 2023-2	735.1	26.3	52.5	52.5	603.8
Senior Notes due 2024-2	859.7	31.6	63.3	63.3	701.5
Operating leases-3	143.2	22.5	41.7	37.1	41.9
Asset retirement obligations-4	1.8	0.8	0.5	0.3	0.2
Total	$4,386.1	$194.6	$433.7	$1,738.4	$2,019.4

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(in millions)	Corporate	Public	Other	Headquarters	Total
2015:
Net sales	$6,816.4	$5,125.5	$1,046.8	$—	$12,988.7
Income (loss) from operations	470.1	343.3	43.1	-114.5	742.0
Depreciation and amortization expense	-96.0	-43.7	-24.4	-63.3	-227.4
2014:
Net sales	$6,475.5	$4,879.4	$719.6	$—	$12,074.5
Income (loss) from operations	439.8	313.2	32.9	-112.9	673.0
Depreciation and amortization expense	-96.3	-43.8	-8.8	-59.0	-207.9
2013:
Net sales	$5,960.1	$4,164.5	$644.0	$—	$10,768.6
Income (loss) from operations(1)	363.3	246.5	27.2	-128.4	508.6
Depreciation and amortization expense	-97.3	-44.0	-8.6	-58.3	-208.2

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Year EndedDecember 31, 2015	Year EndedDecember 31, 2014	Year EndedDecember 31, 2013
Dollars inMillions	Percentageof Total NetSales	Dollars inMillions	Percentageof Total NetSales	Dollars inMillions	Percentageof Total NetSales
Notebooks/Mobile Devices	$2,539.4	19.6%	$2,354.0	19.5%	$1,696.5	15.8%
Netcomm Products	1,914.9	14.7	1,613.3	13.4	1,482.7	13.8
Enterprise and Data Storage (Including Drives)	1,065.2	8.2	1,024.2	8.5	999.3	9.3
Other Hardware	4,756.4	36.6	4,551.1	37.6	4,184.1	38.8
Software	2,163.6	16.7	2,064.1	17.1	1,982.4	18.4
Services	478.0	3.7	371.9	3.1	332.7	3.1
Other-1	71.2	0.5	95.9	0.8	90.9	0.8
Total Net sales	$12,988.7	100.0%	$12,074.5	100.0%	$10,768.6	100.0%

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Question: as of dec 31 , 2015 , what percentage of total indebtedness was nonsecure?
Answer: 0.51515