considering the final year of the investment , what was the highest return for the initial 100$ ?
performance graph the annual changes for the period shown december 1 , 2013 ( when our ordinary shares began trading ) to december 31 , 2017 in the graph on this page are based on the assumption that $ 100 had been invested in allegion plc ordinary shares , the standard & poor 2019s 500 stock index ( "s&p 500" ) and the standard & poor's 400 capital goods index ( "s&p 400 capital goods" ) on december 1 , 2013 , and that all quarterly dividends were reinvested . the total cumulative dollar returns shown on the graph represent the value that such investments would have had on december 31 , 2017 . december 1 , december 31 , december 31 , december 31 , december 31 , december 31 .

|  | December 1, 2013 | December 31, 2013 | December 31, 2014 | December 31, 2015 | December 31, 2016 | December 31, 2017 |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| Allegion plc | 100.00 | 102.20 | 129.03 | 154.37 | 150.97 | 189.19 |
| S&P 500 | 100.00 | 102.53 | 116.57 | 118.18 | 132.31 | 161.20 |
| S&P 400 Capital Goods | 100.00 | 104.58 | 104.84 | 99.07 | 130.70 | 162.97 |

.

initial_investment = 100
final_value = 189.19
answer = final_value - initial_investment