apple inc .| 2016 form 10-k | 20 company stock performance the following graph shows a comparison of cumulative total shareholder return , calculated on a dividend reinvested basis , for the company , the s&p 500 index , the s&p information technology index and the dow jones u.s .technology supersector index for the five years ended september 24 , 2016 .the graph assumes $ 100 was invested in each of the company 2019s common stock , the s&p 500 index , the s&p information technology index and the dow jones u.s .technology supersector index as of the market close on september 23 , 2011 .note that historic stock price performance is not necessarily indicative of future stock price performance .* $ 100 invested on 9/23/11 in stock or index , including reinvestment of dividends .data points are the last day of each fiscal year for the company 2019s common stock and september 30th for indexes .copyright a9 2016 s&p , a division of mcgraw hill financial .all rights reserved .copyright a9 2016 dow jones & co .all rights reserved .september september september september september september .                                              | september2011 | september2012 | september2013 | september2014 | september2015 | september2016
apple inc .                                  | $ 100         | $ 166         | $ 123         | $ 183         | $ 212         | $ 213        
s&p 500 index                                | $ 100         | $ 130         | $ 155         | $ 186         | $ 185         | $ 213        
s&p information technology index             | $ 100         | $ 132         | $ 142         | $ 183         | $ 187         | $ 230        
dow jones u.s . technology supersector index | $ 100         | $ 130         | $ 137         | $ 178         | $ 177         | $ 217         .
Question: what was the value of apple inc. in 2014?
Steps: Ask for number 183
Answer: 183.0
Question: and what was it in 2013?

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.
apple inc .| 2016 form 10-k | 20 company stock performance the following graph shows a comparison of cumulative total shareholder return , calculated on a dividend reinvested basis , for the company , the s&p 500 index , the s&p information technology index and the dow jones u.s .technology supersector index for the five years ended september 24 , 2016 .the graph assumes $ 100 was invested in each of the company 2019s common stock , the s&p 500 index , the s&p information technology index and the dow jones u.s .technology supersector index as of the market close on september 23 , 2011 .note that historic stock price performance is not necessarily indicative of future stock price performance .* $ 100 invested on 9/23/11 in stock or index , including reinvestment of dividends .data points are the last day of each fiscal year for the company 2019s common stock and september 30th for indexes .copyright a9 2016 s&p , a division of mcgraw hill financial .all rights reserved .copyright a9 2016 dow jones & co .all rights reserved .september september september september september september .                                              | september2011 | september2012 | september2013 | september2014 | september2015 | september2016
apple inc .                                  | $ 100         | $ 166         | $ 123         | $ 183         | $ 212         | $ 213        
s&p 500 index                                | $ 100         | $ 130         | $ 155         | $ 186         | $ 185         | $ 213        
s&p information technology index             | $ 100         | $ 132         | $ 142         | $ 183         | $ 187         | $ 230        
dow jones u.s . technology supersector index | $ 100         | $ 130         | $ 137         | $ 178         | $ 177         | $ 217         .
Question: what was the value of apple inc. in 2014?
Steps: Ask for number 183
Answer: 183.0
Question: and what was it in 2013?
