stock performance graph the following graph provides a comparison of five year cumulative total stockholder returns of teleflex common stock , the standard a0& poor 2019s ( s&p ) 500 stock index and the s&p 500 healthcare equipment & supply index . the annual changes for the five-year period shown on the graph are based on the assumption that $ 100 had been invested in teleflex common stock and each index on december a031 , 2012 and that all dividends were reinvested . market performance .
s&p 500 healthcare equipment & supply index 100 128 161 171 181 238 .
Company / Index 2012 2013 2014 2015 2016 2017
Teleflex Incorporated 100 134 166 192 237 368
S&P 500 Index 100 132 151 153 171 208
S&P 500 Healthcare Equipment & Supply Index 100 128 161 171 181 238
company / index 2012 2013 2014 2015 2016 2017
teleflex incorporated 100 134 166 192 237 368
s&p 500 index 100 132 151 153 171 208
s&p 500 healthcare equipment & supply index 100 128 161 171 181 238
what is roi of an investment in s&p 500 index in 2012 and sold in 2017?