Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.

Text: item 7 . management 2019s discussion and analysis of financial condition and results of operations introduction the following discussion and analysis presents management 2019s perspective of our business , financial condition and overall performance . this information is intended to provide investors with an understanding of our past performance , current financial condition and outlook for the future and should be read in conjunction with 201citem 8 . financial statements and supplementary data 201d of this report . overview of 2017 results during 2017 , we generated solid operating results with our strategy of operating in north america 2019s best resource plays , delivering superior execution , continuing disciplined capital allocation and maintaining a high degree of financial strength . led by our development in the stack and delaware basin , we continued to improve our 90-day initial production rates . with investments in proprietary data tools , predictive analytics and artificial intelligence , we are delivering industry-leading , initial-rate well productivity performance and improving the performance of our established wells . compared to 2016 , commodity prices increased significantly and were the primary driver for improvements in devon 2019s earnings and cash flow during 2017 . we exited 2017 with liquidity comprised of $ 2.7 billion of cash and $ 2.9 billion of available credit under our senior credit facility . we have no significant debt maturities until 2021 . we further enhanced our financial strength by completing approximately $ 415 million of our announced $ 1 billion asset divestiture program in 2017 . we anticipate closing the remaining divestitures in 2018 . in 2018 and beyond , we have the financial capacity to further accelerate investment across our best-in-class u.s . resource plays . we are increasing drilling activity and will continue to shift our production mix to high-margin products . we will continue our premier technical work to drive capital allocation and efficiency and industry- leading well productivity results . we will continue to maximize the value of our base production by sustaining the operational efficiencies we have achieved . finally , we will continue to manage activity levels within our cash flows . we expect this disciplined approach will position us to deliver capital-efficient , cash-flow expansion over the next two years . key measures of our financial performance in 2017 are summarized in the following table . increased commodity prices as well as continued focus on our production expenses improved our 2017 financial performance as compared to 2016 , as seen in the table below . more details for these metrics are found within the 201cresults of operations 2013 2017 vs . 2016 201d , below. . <table class='wikitable'><tr><td>1</td><td>net earnings ( loss ) attributable to devon</td><td>2017 $ 898</td><td>change +185% ( +185 % )</td><td>2016* $ -1056 ( 1056 )</td><td>change +92% ( +92 % )</td><td>2015* $ -12896 ( 12896 )</td></tr><tr><td>2</td><td>net earnings ( loss ) per diluted share attributable to devon</td><td>$ 1.70</td><td>+181% ( +181 % )</td><td>$ -2.09 ( 2.09 )</td><td>+93% ( +93 % )</td><td>$ -31.72 ( 31.72 )</td></tr><tr><td>3</td><td>core earnings ( loss ) attributable to devon ( 1 )</td><td>$ 427</td><td>+217% ( +217 % )</td><td>$ -367 ( 367 )</td><td>- 430% ( 430 % )</td><td>$ 111</td></tr><tr><td>4</td><td>core earnings ( loss ) per diluted share attributable to devon ( 1 )</td><td>$ 0.81</td><td>+210% ( +210 % )</td><td>$ -0.73 ( 0.73 )</td><td>- 382% ( 382 % )</td><td>$ 0.26</td></tr><tr><td>5</td><td>retained production ( mboe/d )</td><td>541</td><td>- 4% ( 4 % )</td><td>563</td><td>- 3% ( 3 % )</td><td>580</td></tr><tr><td>6</td><td>total production ( mboe/d )</td><td>543</td><td>- 11% ( 11 % )</td><td>611</td><td>- 10% ( 10 % )</td><td>680</td></tr><tr><td>7</td><td>realized price per boe ( 2 )</td><td>$ 25.96</td><td>+39% ( +39 % )</td><td>$ 18.72</td><td>- 14% ( 14 % )</td><td>$ 21.68</td></tr><tr><td>8</td><td>operating cash flow</td><td>$ 2909</td><td>+94% ( +94 % )</td><td>$ 1500</td><td>- 69% ( 69 % )</td><td>$ 4898</td></tr><tr><td>9</td><td>capitalized expenditures including acquisitions</td><td>$ 2937</td><td>- 25% ( 25 % )</td><td>$ 3908</td><td>- 32% ( 32 % )</td><td>$ 5712</td></tr><tr><td>10</td><td>shareholder and noncontrolling interests distributions</td><td>$ 481</td><td>- 8% ( 8 % )</td><td>$ 525</td><td>- 19% ( 19 % )</td><td>$ 650</td></tr><tr><td>11</td><td>cash and cash equivalents</td><td>$ 2673</td><td>+36% ( +36 % )</td><td>$ 1959</td><td>- 15% ( 15 % )</td><td>$ 2310</td></tr><tr><td>12</td><td>total debt</td><td>$ 10406</td><td>+2% ( +2 % )</td><td>$ 10154</td><td>- 22% ( 22 % )</td><td>$ 13032</td></tr><tr><td>13</td><td>reserves ( mmboe )</td><td>2152</td><td>+5% ( +5 % )</td><td>2058</td><td>- 6% ( 6 % )</td><td>2182</td></tr></table> .
Question: for 2017, what is the ratio of operating cash flow to total debt?

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