Please answer the given financial question based on the context.
Context: 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 ) . .
|company/index|december 31 , 2013|december 31 , 2014|december 31 , 2015|december 31 , 2016|december 31 , 2017|december 31 , 2018|
|o 2019reilly 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|
.
Question: what is the roi of an investment in o 2019reilly automotive inc . from 2013 to 2017?


Answer: The answer is:0.87