The following table presents our net sales by customer channel for our Corporate and Public segments and the yearover-year dollar and percentage change in net sales for the years ended December 31, 2013 and 2012.
Net sales of $150.1 million and $124.2 million for the years ended December 31, 2013 and 2012 have been reclassified from the small business customer channel to the medium/large customer channel to conform to the 2014 presentation.
## Table 0 ##
Total net sales in 2013 increased $640.4 million, or 6.3%, to $10,768.6 million, compared to $10,128.2 million in 2012.
There were 254 selling days for both the years ended December 31, 2013 and 2012.
The increase in total net sales was primarily the result of growth in hardware and software, a more tenured sales force, a continued focus on seller productivity across all areas of the organization and the addition of nearly 120 customer-facing coworkers, the majority in pre- and post-sale technical positions such as technical specialists and service delivery roles.
Our total net sales growth for the year ended December 31, 2013 reflected growth in notebooks/mobile devices, netcomm products and software.
Software gains were driven by growth in security, document management software and network management software, partially offset by a decline in application suites.
Corporate segment net sales in 2013 increased $447.3 million, or 8.1%, compared to 2012, driven by sales growth in the medium/large customer channel.
Within our Corporate segment, net sales to medium/large customers increased 10.5% between years primarily due to certain of these customers increasing their IT spending, a more tenured sales force, a continued focus on seller productivity and additional customer-facing coworkers, the majority in pre- and post-sale technical positions such as technical specialists and service delivery roles.
This increase was led by unit volume growth in netcomm products and growth in notebooks/mobile devices and software.
Partially offsetting the growth in the medium/large customer channel was a 3.5% decline in net sales to small business customers, due to certain of these customers taking a more cautious approach to spending as macroeconomic and regulatory uncertainty impacted decision-making.
This decrease was led by unit volume declines in notebooks/mobile devices, partially offset by growth in netcomm products.
Public segment net sales in 2013 increased $141.5 million, or 3.5%, between years, driven by strong performance in the education customer channel.
Net sales to education customers increased $256.7 million, or 21.5%, between years, led by growth in net sales to K-12 customers, reflecting increased sales of notebooks/mobile devices to support new standardized digital testing requirements that will take effect in 2014.
Net sales to government customers decreased $143.5 million, or 10.3%, in 2013 compared to 2012 due to reductions and delays in federal government spending following sequestration, uncertainty over future budget negotiations and the partial shutdown of the federal government.
The government customer channel net sales decline was led by decreases in sales of enterprise storage and notebooks/mobile devices, partially offset by growth in software.
Net sales to healthcare customers increased $28.3 million, or 2.0%, between years, driven by growth in notebooks/mobile devices and desktop computers.
Gross profit Gross profit increased $90.7 million, or 5.4%, to $1,760.3 million in 2013, compared to $1,669.6 million in 2012.
As a percentage of total net sales, gross profit decreased 20 basis points to 16.3% in 2013, down from 16.5% in 2012.
Gross profit margin was negatively impacted 30 basis points by unfavorable price/mix changes within product margin, as we experienced product margin compression in transactional product categories such as desktops and notebooks.
Partially offsetting this decrease was an increase of 10 basis points due to a higher mix of net service contract revenue.
Net service contract revenue, including items such as third-party services and warranties, has a positive impact on gross profit margin as our cost paid to the vendor or third-party service provider is recorded as a reduction to net sales, resulting in net sales being equal to the gross profit on the transaction.
Overview We finance our operations and capital expenditures through a combination of internally generated cash from operations and from borrowings under our senior secured asset-based revolving credit facility.
We believe that our current sources of funds will be sufficient to fund our cash operating requirements for the next year.
In addition, we believe that, in spite of the uncertainty of future macroeconomic conditions, we have adequate sources of liquidity and funding available to meet our longer-term needs.
However, there are a number of factors that may negatively impact our available sources of funds.
The amount of cash generated from operations will be dependent upon factors such as the successful execution of our business plan and general economic conditions.
Long-Term Debt Activities During the year ended December 31, 2014, we had significant debt refinancings.
In connection with these refinancings, we recorded a loss on extinguishment of long-term debt of $90.7 million in our consolidated statement of operations for the year ended December 31, 2014.
See Note 7 to the accompanying audited consolidated financial statements included elsewhere in this report for additional details.
Share Repurchase Program On November 6, 2014, we announced that our Board of Directors approved a $500 million share repurchase program effective immediately under which we may repurchase shares of our common stock in the open market or through privately negotiated transactions, depending on share price, market conditions and other factors.
The share repurchase program does not obligate us to repurchase any dollar amount or number of shares, and repurchases may be commenced or suspended from time to time without prior notice.
As of the date of this filing, no shares have been repurchased under the share repurchase program.
Dividends A summary of 2014 dividend activity for our common stock is shown below:
## Table 1 ##
On February 10, 2015, we announced that our board of directors declared a quarterly cash dividend on our common stock of $0.0675 per share.
The dividend will be paid on March 10, 2015 to all stockholders of record as of the close of business on February 25, 2015.
The payment of any future dividends will be at the discretion of our board of directors and will depend upon our results of operations, financial condition, business prospects, capital requirements, contractual restrictions, any potential indebtedness we may incur, restrictions imposed by applicable law, tax considerations and other factors that our board of directors deems relevant.
In addition, our ability to pay dividends on our common stock will be limited by restrictions on our ability to pay dividends or make distributions to our stockholders and on the ability of our subsidiaries to pay dividends or make distributions to us, in each case, under the terms of our current and any future agreements governing our indebtedness.
In order to manage our working capital and operating cash needs, we monitor our cash conversion cycle, defined as days of sales outstanding in accounts receivable plus days of supply in inventory minus days of purchases outstanding in accounts payable, based on a rolling three-month average.
The following table presents the components of our cash conversion cycle: (in days)
## Table 2 ##
(1) Represents the rolling three-month average of the balance of trade accounts receivable, net at the end of the period divided by average daily net sales for the same three-month period.
Also incorporates components of other miscellaneous receivables.
(2) Represents the rolling three-month average of the balance of inventory at the end of the period divided by average daily cost of goods sold for the same three-month period.
The prior period has been revised to conform to the current definition.
(3) Represents the rolling three-month average of the combined balance of accounts payable-trade, excluding cash overdrafts, and accounts payable-inventory financing at the end of the period divided by average daily cost of goods sold for the same three-month period.
The cash conversion cycle decreased to 21 days at December 31, 2014 compared to 23 days at December 31, 2013, primarily driven by improvement in DSO.
The decline in DSO was primarily driven by improved collections and early payments from certain customers.
Additionally, the timing of inventory receipts at the end of 2014 had a favorable impact on DIO and an unfavorable impact on DPO.
The cash conversion cycle decreased to 23 days at December 31, 2013 compared to 24 days at December 31, 2012.
The increase in DSO was primarily driven by an increase in receivables for third-party services such as software assurance and warranties.
These services have an unfavorable impact on DSO as the receivable is recognized on the balance sheet on a gross basis while the corresponding sales amount in the statement of operations is recorded on a net basis.
The DPO increase was primarily due to an increase in payables for third-party services, which offsets the related increase in DSO discussed above.
These services have a favorable impact on DPO as the payable is recognized on the balance sheet without a corresponding cost of sales in the statement of operations because the cost paid to the vendor or third-party service provider is recorded as a reduction to net sales.
The timing of quarter-end payments also had a favorable impact on DPO at December 31, 2013.
Investing Activities Net cash used in investing activities increased $117.7 million in 2014 compared to 2013.
We paid $86.8 million in the fourth quarter of 2014 to acquire a 35% non-controlling interest in Kelway.
Additionally, capital expenditures increased $7.9 million to $55.0 million from $47.1 million for 2014 and 2013, respectively, primarily for improvements to our information technology systems during both years.
Net cash used in investing activities increased $5.4 million in 2013 compared to 2012.
Capital expenditures were $47.1 million and $41.4 million for 2013 and 2012, respectively, primarily for improvements to our information technology systems during both years.
Financing Activities 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 $161.3 million and $569.4 million during 2014 and 2013, respectively, as cash was used in each period to reduce our total long-term debt.
See Note 7 to the accompanying audited consolidated financial statements included elsewhere in this report for a description of the debt transactions impacting each period.
Net cash used in financing activities decreased $169.7 million in 2013 compared to 2012.
The decrease was primarily driven by various debt 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
CDW CORPORATION AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS related employer payroll tax costs).
The contributions of these amounts are due by March 15 of the calendar year following the year in which the Company realizes the benefits of the deductions.
This arrangement has been accounted for as contingent consideration.
Pre-2009 business combinations were accounted for under a former accounting standard which, among other aspects, precluded the recognition of certain contingent consideration as of the business combination date.
Instead, under the former accounting standard, contingent consideration is accounted for as additional purchase price (goodwill) at the time the contingency is resolved.
As of December 31, 2013, the Company accrued $20.9 million related to this arrangement within other current liabilities, as the Company realized the tax benefit of the compensation deductions during the 2013 tax year.
The Company made the related cash contribution during the first quarter of 2014.11.
Earnings Per Share The numerator for both basic and diluted earnings per share is net income.
The denominator for basic earnings per share is the weighted-average number of common shares outstanding during the period.
The 2013 denominator was impacted by the common shares issued during both the IPO and the underwriters' exercise in full of the overallotment option granted to them in connection with the IPO.
Because such common shares were issued on July 2, 2013 and July 31, 2013, respectively, they are only partially reflected in the 2013 denominator.
Such shares are fully reflected in the 2014 denominator.
See Note 9 for additional discussion of the IPO.
The dilutive effect of outstanding restricted stock, restricted stock units, stock options, Coworker Stock Purchase Plan units and MPK Plan units is reflected in the denominator for diluted earnings per share using the treasury stock method.
The following is a reconciliation of basic shares to diluted shares:

Tables referenced above, in order (Table 0 first):
<table><tr><td>(in millions)</td><td colspan="2">Years Ended December 31,</td><td></td><td></td></tr><tr><td></td><td>2013</td><td>2012</td><td>Dollar Change</td><td>Percent Change</td></tr><tr><td>Corporate:</td><td></td><td></td><td></td><td></td></tr><tr><td>Medium / Large</td><td>$5,052.7</td><td>$4,572.7</td><td>$480.0</td><td>10.5%</td></tr><tr><td>Small Business</td><td>907.4</td><td>940.1</td><td>-32.7</td><td>-3.5</td></tr><tr><td>Total Corporate</td><td>$5,960.1</td><td>$5,512.8</td><td>$447.3</td><td>8.1%</td></tr><tr><td>Public:</td><td></td><td></td><td></td><td></td></tr><tr><td>Government</td><td>$1,250.6</td><td>$1,394.1</td><td>$-143.5</td><td>-10.3%</td></tr><tr><td>Education</td><td>1,449.0</td><td>1,192.3</td><td>256.7</td><td>21.5</td></tr><tr><td>Healthcare</td><td>1,464.9</td><td>1,436.6</td><td>28.3</td><td>2.0</td></tr><tr><td>Total Public</td><td>$4,164.5</td><td>$4,023.0</td><td>$141.5</td><td>3.5%</td></tr></table>
<table><tr><td>Dividend Amount</td><td>Declaration Date</td><td>Record Date</td><td>Payment Date</td></tr><tr><td>$0.0425</td><td>February 12, 2014</td><td>February 25, 2014</td><td>March 10, 2014</td></tr><tr><td>$0.0425</td><td>May 8, 2014</td><td>May 27, 2014</td><td>June 10, 2014</td></tr><tr><td>$0.0425</td><td>July 31, 2014</td><td>August 25, 2014</td><td>September 10, 2014</td></tr><tr><td>$0.0675</td><td>November 6, 2014</td><td>November 25, 2014</td><td>December 10, 2014</td></tr></table>
<table><tr><td>(in days)</td><td colspan="3">December 31,</td></tr><tr><td></td><td>2014</td><td>2013</td><td>2012</td></tr><tr><td>Days of sales outstanding (DSO)<sup>(1)</sup></td><td>42</td><td>44</td><td>42</td></tr><tr><td>Days of supply in inventory (DIO)<sup>(2)</sup></td><td>13</td><td>14</td><td>14</td></tr><tr><td>Days of purchases outstanding (DPO)<sup>(3)</sup></td><td>-34</td><td>-35</td><td>-32</td></tr><tr><td>Cash conversion cycle</td><td>21</td><td>23</td><td>24</td></tr></table>

Question: What is the growing rate of healthcare in the year with the most education?
Answer: 0.0197
Reasoning program: subtract(1464.9,1436.6), divide(#0,1436.6)