human
stock performance graph: the graph below shows the cumulative total shareholder return assuming the investment of $100, on december 31, 2010, and the reinvestment of dividends thereafter, if any, in the company's common stock versus the standard and poor's s&p 500 retail index ("s&p 500 retail index") and the standard and poor's s&p 500 index ("s&p 500"). .
|  | December 31, |
| Company/Index | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 |
| O'Reilly Automotive, Inc. | $100 | $132 | $148 | $213 | $319 | $419 |
| S&P 500 Retail Index | 100 | 103 | 128 | 185 | 203 | 252 |
| S&P 500 | $100 | $100 | $113 | $147 | $164 | $163 |
.
Please answer the following question with expressions if necessary.
what roi does this represent?
assistant
subtract(100, 100), divide(#0, 100)