what was the percentage growth of the vornado realty trust from 2005 to 2006
performance graph the following graph is a comparison of the five-year cumulative return of our common shares , the standard & poor 2019s 500 index ( the 201cs&p 500 index 201d ) and the national association of real estate investment trusts 2019 ( 201cnareit 201d ) all equity index ( excluding health care real estate investment trusts ) , a peer group index . the graph assumes that $ 100 was invested on december 31 , 2005 in our common shares , the s&p 500 index and the nareit all equity index and that all dividends were reinvested without the payment of any commissions . there can be no assurance that the performance of our shares will continue in line with the same or similar trends depicted in the graph below. .

|  | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| Vornado Realty Trust | 100 | 151 | 113 | 81 | 100 | 124 |
| S&P 500 Index | 100 | 116 | 122 | 77 | 97 | 112 |
| The NAREIT All Equity Index | 100 | 135 | 114 | 71 | 91 | 116 |

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change = 151 - 100
answer = change