Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.


part a0ii item a05 . market for registrant 2019s common equity , related stockholder matters and issuer purchases of equity securities our common stock is listed on the new york stock exchange under the symbol 201ctfx . 201d as of february 19 , 2019 , we had 473 holders of record of our common stock . a substantially greater number of holders of our common stock are beneficial owners whose shares are held by brokers and other financial institutions for the accounts of beneficial owners . 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 , 2013 and that all dividends were reinvested . market performance . <table class='wikitable'><tr><td>1</td><td>company / index</td><td>2013</td><td>2014</td><td>2015</td><td>2016</td><td>2017</td><td>2018</td></tr><tr><td>2</td><td>teleflex incorporated</td><td>100</td><td>124</td><td>143</td><td>177</td><td>275</td><td>288</td></tr><tr><td>3</td><td>s&p 500 index</td><td>100</td><td>114</td><td>115</td><td>129</td><td>157</td><td>150</td></tr><tr><td>4</td><td>s&p 500 healthcare equipment & supply index</td><td>100</td><td>126</td><td>134</td><td>142</td><td>186</td><td>213</td></tr></table> s&p 500 healthcare equipment & supply index 100 126 134 142 186 213 .
Question: what was the performance price of the teleflex in 2014?
Answer: 124.0
Question: and what was it in 2013?
Answer: 100.0
Question: what was, then, the fluctuation over the year?
Answer: 24.0
Question: and how much does this fluctuation represent in relation to the 2013 price?
Answer: 0.24
Question: and throughout the subsequent year of this period, what was that fluctuation in the price?
Answer: 19.0
Question: what is this 2014-2015 fluctuation as a portion of the 2014 price of the stock?

0.15323