We report all non-cash compensation based on stock option appreciation as a single expense category in our accompanying statements of operations.
The following table represents the other expense categories in our statements of operations that would be affected if non-cash, stock-based compensation was allocated to the same expense categories as the base compensation for key employees who participate in the 1999 incentive plan:
## Table 0 ##
– subscriber promotion subsidies,” “other subscriber subsidies” and “advertising and other” expenses.
Premarketing cash flow was $1.596 billion during the year ended December 31, 2001, an increase of 64% compared to the same period in 2000.
Our pre-marketing cash flow as a percentage of total revenue was approximately 40% during the year ended December 31, 2001 compared to 36% during the same period in 2000.
Earnings Before Interest, Taxes, Depreciation and Amortization.
EBITDA is defined as “operating income (loss)” plus “depreciation and amortization,” and “non-cash, stock-based compensation.
” EBITDA was $511 million during the year ended December 31, 2001, compared to negative $187 million during the same period in 2000.
This improvement in EBITDA was directly attributable to the increase in the number of DISH Network subscribers and higher average revenue per subscriber, resulting in recurring revenue which was large enough to support the cost of new and existing subscribers, together with the introduction of our Digital Home Plan in July 2000.
Our calculation of EBITDA for the years ended December 31, 2001 and 2000 does not include approximately $20 million and $51 million, respectively, of non-cash compensation expense resulting from post-grant appreciation of employee stock options.
In addition, EBITDA does not include the impact of amounts capitalized under our Digital Home Plan of approximately $338 million and $65 million during 2001 and 2000, respectively.
The following table reflects the reconciliation of pre-marketing cash flow and EBITDA to the accompanying financial statements:
## Table 1 ##
Depreciation and Amortization.
“Depreciation and amortization” expenses aggregated $279 million during the year ended December 31, 2001, a $94 million increase compared to the same period in 2000.
The increase in depreciation and amortization expenses principally resulted from an increase in depreciation related to the commencement of operation of EchoStar VI in October 2000 and other depreciable assets, including Digital Home Plan equipment, placed in service during late 2000 and 2001.
Other Income and Expense.
“Other expense,” net, totaled $426 million during the year ended December 31, 2001, an increase of $200 million compared to the same period in 2000.
This increase primarily resulted from an increase in interest expense as a result of the issuance of our 10 3/8% Senior Notes in September 2000 and the issuance of our 5 3/4% Convertible Subordinated Notes in May 2001 and from net losses on marketable and non
## Table 2 ##
(a) Includes 3,801, 563, 5,362, 6,057, 1,229 MDt for 2011, 2012, 2013, 2014 and 2015, respectively, which are also reflected in firm transportation and other.
For further discussion of the company’s gas operating revenues and its gas results, see “Results of Operations” in Item 7.
For additional segment information, see Note N to the financial statements in Item 8.
Gas Peak Demand The gas peak demand for firm sales customers in CECONY’s service area occurs during the winter heating season.
The peak day demand during the winter 2015/2016 (through February 1, 2016) occurred on January 4, 2016 when the demand reached 1,068 MDt.
The 2015/2016 peak day demand included 551 MDt for CECONY’s full-service customers and 517 MDt for customers participating in its gas retail choice program.
“Design weather” for the gas system is a standard to which the actual peak demand is adjusted for evaluation and planning purposes.
The company estimates that, under design weather conditions, the 2016/2017 service area peak day demand will be 1,456 MDt, including an estimated 757 MDt for its full-service customers and 699 MDt for its gas retail choice customers.
The forecasted peak day demand at design conditions does not include gas used by interruptible gas customers including electric and steam generating stations.
The company forecasts an average annual growth of the gas peak demand over the next five years at design conditions to be approximately 2.3 percent in its service area.
Gas Supply CECONY and O&R have combined their gas requirements, and contracts to meet those requirements, into a single portfolio.
The combined portfolio is administered by, and related management services are provided by, CECONY (for itself and as agent for O&R) and costs are allocated between the Utilities in accordance with provisions approved by the NYSPSC.
See Note S to the financial statements in Item 8.
Charges from suppliers for the firm purchase of gas, which are based on formulas or indexes or are subject to negotiation, are generally designed to approximate market prices.
The Utilities have contracts with interstate
Net cash used by investing activities in 2013 also included $38.2 million for the May 13, 2013 acquisition of Challenger.
See Note 2 to the Consolidated Financial Statements for information on the Challenger acquisition.
Capital expenditures in 2013, 2012 and 2011 totaled $70.6 million, $79.4 million and $61.2 million, respectively.
Capital expenditures in 2013 included continued investments related to the company’s execution of its strategic Value Creation Processes around safety, quality, customer connection, innovation and RCI initiatives.
Capital expenditures in all three years included spending to support the company’s strategic growth initiatives.
In 2013, the company continued to invest in new product, efficiency, safety and cost reduction initiatives to expand and improve its manufacturing capabilities worldwide.
In 2012, the company completed the construction of a fourth factory in Kunshan, China, following the 2011 construction of a new engineering and research and development facility in Kunshan.
Capital expenditures in all three years also included investments, particularly in the United States, in new product, efficiency, safety and cost reduction initiatives, as well as investments in new production and machine tooling to enhance manufacturing operations, and ongoing replacements of manufacturing and distribution equipment.
Capital spending in all three years also included spending for the replacement and enhancement of the company’s global enterprise resource planning (ERP) management information systems, as well as spending to enhance the company’s corporate headquarters and research and development facilities in Kenosha, Wisconsin.
Snap-on believes that its cash generated from operations, as well as its available cash on hand and funds available from its credit facilities will be sufficient to fund the company’s capital expenditure requirements in 2014.  Financing Activities Net cash used by financing activities was $137.8 million in 2013, $127.0 million in 2012 and $293.7 million in 2011.
Net cash used by financing activities in 2011 reflects the August 2011 repayment of $200 million of unsecured 6.25% notes upon maturity with available cash.
Proceeds from stock purchase and option plan exercises totaled $29.2 million in 2013, $46.8 million in 2012 and $25.7 million in 2011.
Snap-on has undertaken stock repurchases from time to time to offset dilution created by shares issued for employee and franchisee stock purchase plans, stock options and other corporate purposes.
In 2013, Snap-on repurchased 926,000 shares of its common stock for $82.6 million under its previously announced share repurchase programs.
As of 2013 year end, Snap-on had remaining availability to repurchase up to an additional $191.7 million in common stock pursuant to its Board of Directors’ (the “Board”) authorizations.
The purchase of Snap-on common stock is at the company’s discretion, subject to prevailing financial and market conditions.
Snap-on repurchased 1,180,000 shares of its common stock for $78.1 million in 2012; Snap-on repurchased 628,000 shares of its common stock for $37.4 million in 2011.
Snap-on believes that its cash generated from operations, available cash on hand, and funds available from its credit facilities, will be sufficient to fund the company’s share repurchases, if any, in 2014.
Snap-on has paid consecutive quarterly cash dividends, without interruption or reduction, since 1939.
Cash dividends paid in 2013, 2012 and 2011 totaled $92.0 million, $81.5 million and $76.7 million, respectively.
On November 8, 2013, the company announced that its Board increased the quarterly cash dividend by 15.8% to $0.44 per share ($1.76 per share per year).
Quarterly dividends declared in 2013 were $0.44 per share in the fourth quarter and $0.38 per share in the first three quarters ($1.58 per share for the year).
Quarterly dividends declared in 2012 were $0.38 per share in the fourth quarter and $0.34 per share in the first three quarters ($1.40 per share for the year).
Quarterly dividends in 2011 were $0.34 per share in the fourth quarter and $0.32 per share in the first three quarters ($1.30 per share for the year).
## Table 3 ##
Snap-on believes that its cash generated from operations, available cash on hand and funds available from its credit facilities will be sufficient to pay dividends in 2014.
Off-Balance-Sheet Arrangements Except as included below in the section labeled “Contractual Obligations and Commitments” and Note 15 to the Consolidated Financial Statements, the company had no off-balance-sheet arrangements as of 2013 year end.

<table><tr><td></td><td colspan="2"> Year Ended December 31,</td></tr><tr><td></td><td> 2000</td><td> 2001</td></tr><tr><td></td><td colspan="2"> (in thousands)</td></tr><tr><td>Customer service center and other</td><td>$1,744</td><td>$1,767</td></tr><tr><td>Satellite and transmission</td><td>3,061</td><td>1,115</td></tr><tr><td>General and administrative</td><td>46,660</td><td>17,291</td></tr><tr><td>Total non-cash, stock-based compensation</td><td>$51,465</td><td>$20,173</td></tr></table>
<table><tr><td></td><td colspan="2"> Year Ended December 31,</td></tr><tr><td></td><td> 2000</td><td> 2001</td></tr><tr><td>Operating income (loss)</td><td>$-424,066</td><td>$212,302</td></tr><tr><td>Depreciation and amortization</td><td>185,356</td><td>278,652</td></tr><tr><td>Non-cash, stock-based compensation</td><td>51,465</td><td>20,173</td></tr><tr><td>EBITDA</td><td>$-187,245</td><td>$511,127</td></tr><tr><td>Cost of sales – subscriber promotion subsidies</td><td>747,020</td><td>459,909</td></tr><tr><td>Other subscriber promotion subsidies</td><td>273,080</td><td>477,903</td></tr><tr><td>Advertising and other</td><td>138,540</td><td>146,563</td></tr><tr><td>Pre-marketing cash flow</td><td>$971,395</td><td>$1,595,502</td></tr></table>
<table><tr><td></td><td colspan="5">Year Ended December 31,</td></tr><tr><td></td><td>2011</td><td>2012</td><td>2013</td><td>2014</td><td>2015</td></tr><tr><td>Gas Delivered(MDt)</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Firm Sales</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Full service</td><td>64,696</td><td>57,595</td><td>67,007</td><td>75,630</td><td>77,197</td></tr><tr><td>Firm transportation of customer-owned gas</td><td>54,291</td><td>52,860</td><td>61,139</td><td>68,731</td><td>72,864</td></tr><tr><td>Total Firm Sales</td><td>118,987</td><td>110,455</td><td>128,146</td><td>144,361</td><td>150,061</td></tr><tr><td>Interruptible Sales (a)</td><td>10,035</td><td>5,961</td><td>10,900</td><td>10,498</td><td>6,332</td></tr><tr><td>Total Gas Delivered to CECONY Customers</td><td>129,022</td><td>116,416</td><td>139,046</td><td>154,859</td><td>156,393</td></tr><tr><td>Transportation of customer-owned gas</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>NYPA</td><td>34,893</td><td>48,107</td><td>48,682</td><td>47,548</td><td>44,038</td></tr><tr><td>Other (mainly generating plants and interruptible transportation)</td><td>97,163</td><td>108,086</td><td>87,379</td><td>105,012</td><td>104,857</td></tr><tr><td>Off-System Sales</td><td>97</td><td>730</td><td>4,638</td><td>15</td><td>389</td></tr><tr><td>Total Sales</td><td>261,175</td><td>273,339</td><td>279,745</td><td>307,434</td><td>305,677</td></tr><tr><td>Gas Delivered($ in millions)</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Firm Sales</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Full service</td><td>$1,048</td><td>$889</td><td>$1,059</td><td>$1,141</td><td>$956</td></tr><tr><td>Firm transportation of customer-owned gas</td><td>356</td><td>380</td><td>414</td><td>453</td><td>458</td></tr><tr><td>Total Firm Sales</td><td>1,404</td><td>1,269</td><td>1,473</td><td>1,594</td><td>1,414</td></tr><tr><td>Interruptible Sales</td><td>74</td><td>39</td><td>69</td><td>91</td><td>46</td></tr><tr><td>Total Gas Delivered to CECONY Customers</td><td>1,478</td><td>1,308</td><td>1,542</td><td>1,685</td><td>1,460</td></tr><tr><td>Transportation of customer-owned gas</td><td></td><td></td><td colspan="3"></td></tr><tr><td>NYPA</td><td>2</td><td>2</td><td>2</td><td>2</td><td>2</td></tr><tr><td>Other (mainly generating plants and interruptible transportation)</td><td>71</td><td>68</td><td>71</td><td>70</td><td>54</td></tr><tr><td>Off-System Sales</td><td>—</td><td>5</td><td>18</td><td>—</td><td>1</td></tr><tr><td>Other operating revenues (mainly regulatory amortizations)</td><td>-30</td><td>32</td><td>-17</td><td>-36</td><td>11</td></tr><tr><td>Total Sales</td><td>$1,521</td><td>$1,415</td><td>$1,616</td><td>$1,721</td><td>$1,528</td></tr><tr><td>Average Revenue per Dt Sold</td><td></td><td></td><td colspan="3"></td></tr><tr><td>Residential</td><td>$18.45</td><td>$18.14</td><td>$18.52</td><td>$16.76</td><td>$13.91</td></tr><tr><td>General</td><td>$12.96</td><td>$11.68</td><td>$12.05</td><td>$12.38</td><td>$9.73</td></tr></table>
<table><tr><td></td><td>2013</td><td>2012</td><td>2011</td></tr><tr><td>Cash dividends paid per common share</td><td>$1.58</td><td>$1.40</td><td>$1.30</td></tr><tr><td>Cash dividends paid as a percent of prior-year retained earnings</td><td>4.5%</td><td>4.4%</td><td>4.7%</td></tr></table>

Question: What is the sum of the total sales in the years where Total Firm Sales is greater than 150000? (in million)
Answer: 305677.0