pre_text: 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. .
post_text: the stock price performance included in this graph is not necessarily indicative of future stock price performance. .
table: 12/31/2012 12/31/2013 12/31/2014 12/31/2015 12/31/2016 12/31/2017
table: HUM $100 $152 $214 $267 $307 $377
table: S&P 500 $100 $132 $150 $153 $171 $208
table: Peer Group $100 $137 $175 $186 $188 $238
question: Analyse this data from a financial earnings document. what was the percent of the growth in the stock total return performance for hum from 2013 to 2014