considering the years 2009-2010 , what is the increase in the final balance?
federal realty investment trust schedule iii summary of real estate and accumulated depreciation 2014continued three years ended december 31 , 2010 reconciliation of accumulated depreciation and amortization ( in thousands ) .

| Balance, December 31, 2007 | $756,703 |
| :--- | :--- |
| Additions during period—depreciation and amortization expense | 101,321 |
| Deductions during period—disposition and retirements of property | (11,766) |
| Balance, December 31, 2008 | 846,258 |
| Additions during period—depreciation and amortization expense | 103,698 |
| Deductions during period—disposition and retirements of property | (11,869) |
| Balance, December 31, 2009 | 938,087 |
| Additions during period—depreciation and amortization expense | 108,261 |
| Deductions during period—disposition and retirements of property | (11,144) |
| Balance, December 31, 2010 | $1,035,204 |

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final_balance_2010 = 1035204
initial_balance_2009 = 938087
increase = final_balance_2010 - initial_balance_2009
answer = increase / initial_balance_2009 * 100