what was the five year change in value of the o 2019reilly automotive inc . stock?
stock performance graph : the graph below shows the cumulative total shareholder return assuming the investment of $ 100 , on december 31 , 2013 , and the reinvestment of dividends thereafter , if any , in the company 2019s common stock versus the standard and poor 2019s s&p 500 retail index ( 201cs&p 500 retail index 201d ) and the standard and poor 2019s s&p 500 index ( 201cs&p 500 201d ) . .

|  | December 31, |
| :--- | :--- |
| Company/Index | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 |
| O’Reilly Automotive, Inc. | $100 | $150 | $197 | $216 | $187 | $268 |
| S&P 500 Retail Index | 100 | 110 | 137 | 143 | 184 | 208 |
| S&P 500 | $100 | $111 | $111 | $121 | $145 | $136 |

.

value_change = 268 - 100
answer = value_change