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stock performance graph the following graph compares the most recent five-year performance of alcoa 2019s common stock with (1) the standard & poor 2019s 500 ae index and (2) the standard & poor 2019s 500 ae materials index, a group of 27 companies categorized by standard & poor 2019s as active in the 201cmaterials 201d market sector. such information shall not be deemed to be 201cfiled . 201d five-year cumulative total return based upon an initial investment of $100 on december 31, 2010 with dividends reinvested alcoa inc. s&p 500 ae index s&p 500 ae materials index dec-'10 dec-'11 dec-'12 dec-'14 dec-'15dec-'13.
| As of December 31, | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 |
| --------- | --------- | --------- | --------- | --------- | --------- | --------- |
| AlcoaInc. | $100 | $57 | $58 | $72 | $107 | $68 |
| S&P 500<sup>®</sup>Index | 100 | 102 | 118 | 157 | 178 | 181 |
| S&P 500<sup>®</sup>Materials Index | 100 | 90 | 104 | 130 | 139 | 128 |
s&p 500 ae index 100 102 118 157 178 181 s&p 500 ae materials index 100 90 104 130 139 128 copyright a9 2016 standard & poor 2019s, a division of the mcgraw-hill companies inc. all rights reserved. source: research data group, inc. (www.researchdatagroup.com/s&p.htm).
Please answer the following questions with expressions if necessary.
what was the investment on the alcoainc . in 2014?
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107
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and what was it in 2013?
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72
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how much, then, does the 2014 investment represent in relation to the 2013 one?
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divide(107, 72)
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and what is the difference between this value and the number one?
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divide(107, 72), subtract(#0, const_1)