what was the percentual increase in the additions during 2004 and 2005?
federal realty investment trust schedule iii summary of real estate and accumulated depreciation 2014continued three years ended december 31 , 2006 reconciliation of accumulated depreciation and amortization ( in thousands ) .

| Balance, December 31, 2003 | $514,177 |
| :--- | :--- |
| Additions during period—depreciation and amortization expense | 82,551 |
| Deductions during period—disposition and retirements of property | (1,390) |
| Balance, December 31, 2004 | 595,338 |
| Additions during period—depreciation and amortization expense | 83,656 |
| Deductions during period—disposition and retirements of property | (15,244) |
| Balance, December 31, 2005 | 663,750 |
| Additions during period—depreciation and amortization expense | 89,564 |
| Deductions during period—disposition and retirements of property | (12,807) |
| Balance, December 31, 2006 | $740,507 |

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additions_increase_2004 = 83656
additions_2004 = 82551
percent_increase = (additions_increase_2004 - additions_2004) / additions_2004
answer = percent_increase * 100