Please answer the given financial question based on the context.
Context: stock total return performance the following graph compares our total return to stockholders with the returns of the standard & poor 2019s composite 500 index ( 201cs&p 500 201d ) and the dow jones us select health care providers index ( 201cpeer group 201d ) for the five years ended december 31 , 2017 . the graph assumes an investment of $ 100 in each of our common stock , the s&p 500 , and the peer group on december 31 , 2012 , and that dividends were reinvested when paid. .
||12/31/2012|12/31/2013|12/31/2014|12/31/2015|12/31/2016|12/31/2017|
|hum|$ 100|$ 152|$ 214|$ 267|$ 307|$ 377|
|s&p 500|$ 100|$ 132|$ 150|$ 153|$ 171|$ 208|
|peer group|$ 100|$ 137|$ 175|$ 186|$ 188|$ 238|
the stock price performance included in this graph is not necessarily indicative of future stock price performance. .
Question: what is the increase observed in the return of the second year of the investment for peer group?


Answer: The answer is:0.27737