Financial report context:
federal realty investment trust schedule iii summary of real estate and accumulated depreciation - continued three years ended december 31 , 2011 reconciliation of accumulated depreciation and amortization ( in thousands ) balance , december 31 , 2008................................................................................................................................... . additions during period 2014depreciation and amortization expense .................................................................... . deductions during period 2014disposition and retirements of property ................................................................. . balance , december 31 , 2009................................................................................................................................... . additions during period 2014depreciation and amortization expense .................................................................... . deductions during period 2014disposition and retirements of property ................................................................. . balance , december 31 , 2010................................................................................................................................... . additions during period 2014depreciation and amortization expense .................................................................... . deductions during period 2014disposition and retirements of property ................................................................. . balance , december 31 , 2011................................................................................................................................... . $ 846258 103698 ( 11869 ) 938087 108261 ( 11144 ) 1035204 114180 ( 21796 ) $ 1127588 .

Financial table:
balance december 31 2008: additions during period 2014depreciation and amortization expense; $ 846258: 103698
balance december 31 2008: deductions during period 2014disposition and retirements of property; $ 846258: -11869 ( 11869 )
balance december 31 2008: balance december 31 2009; $ 846258: 938087
balance december 31 2008: additions during period 2014depreciation and amortization expense; $ 846258: 108261
balance december 31 2008: deductions during period 2014disposition and retirements of property; $ 846258: -11144 ( 11144 )
balance december 31 2008: balance december 31 2010; $ 846258: 1035204
balance december 31 2008: additions during period 2014depreciation and amortization expense; $ 846258: 114180
balance december 31 2008: deductions during period 2014disposition and retirements of property; $ 846258: -21796 ( 21796 )
balance december 31 2008: balance december 31 2011; $ 846258: $ 1127588

Additional report context:
federal realty investment trust schedule iii summary of real estate and accumulated depreciation - continued three years ended december 31 , 2011 reconciliation of accumulated depreciation and amortization ( in thousands ) balance , december 31 , 2008................................................................................................................................... . additions during period 2014depreciation and amortization expense .................................................................... . deductions during period 2014disposition and retirements of property ................................................................. . balance , december 31 , 2009................................................................................................................................... . additions during period 2014depreciation and amortization expense .................................................................... . deductions during period 2014disposition and retirements of property ................................................................. . balance , december 31 , 2010................................................................................................................................... . additions during period 2014depreciation and amortization expense .................................................................... . deductions during period 2014disposition and retirements of property ................................................................. . balance , december 31 , 2011................................................................................................................................... . $ 846258 103698 ( 11869 ) 938087 108261 ( 11144 ) 1035204 114180 ( 21796 ) $ 1127588 .

Question: what is the percentual growth of the depreciation and amortization expenses during 2008 and 2009?
Answer: 4.4%