Please answer the given financial question based on the context.
Context: 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|$ 756703|
|additions during period 2014depreciation and amortization expense|101321|
|deductions during period 2014disposition and retirements of property|-11766 ( 11766 )|
|balance december 31 2008|846258|
|additions during period 2014depreciation and amortization expense|103698|
|deductions during period 2014disposition and retirements of property|-11869 ( 11869 )|
|balance december 31 2009|938087|
|additions during period 2014depreciation and amortization expense|108261|
|deductions during period 2014disposition and retirements of property|-11144 ( 11144 )|
|balance december 31 2010|$ 1035204|
.
Question: considering the years 2009-2010 , what is the increase in the final balance?


Answer: The answer is:0.10353