{"pre_text": ["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 ."], "post_text": ["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 ."], "table": [["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"], ["additions during period 2014depreciation and amortization expense", "114180"], ["deductions during period 2014disposition and retirements of property", "-21796 ( 21796 )"], ["balance december 31 2011", "$ 1127588"]], "table_ori": [["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"], ["Additions during period—depreciation and amortization expense", "114,180"], ["Deductions during period—disposition and retirements of property", "(21,796)"], ["Balance, December 31, 2011", "$1,127,588"]]}

Question: considering the years 2008-2010 , what is the value of the average deductions?\\n
Evidence:
table_2: balance december 31 2008 the deductions during period 2014disposition and retirements of property of $ 846258 is -11869 ( 11869 ) ;
table_5: balance december 31 2008 the deductions during period 2014disposition and retirements of property of $ 846258 is -11144 ( 11144 ) ;
table_8: balance december 31 2008 the deductions during period 2014disposition and retirements of property of $ 846258 is -21796 ( 21796 ) ;
Program: add(11869, 11144), add(#0, 21796), divide(#1, const_3)
Answer:
str_answer: 14936.33
exe_answer: 14936.33333