considering the years 2006-2009 , what is the value of the average additions?
Important information:
table_1: balance december 31 2006 the additions during period 2014depreciation and amortization expense of $ 740507 is 96454 ;
table_4: balance december 31 2006 the additions during period 2014depreciation and amortization expense of $ 740507 is 101321 ;
table_7: balance december 31 2006 the additions during period 2014depreciation and amortization expense of $ 740507 is 103.698 ;
Reasoning Steps:
Step: add1-1(96454, 101321) = 197775
Step: multiply1-2(const_1000, 103.698) = 103698
Step: add1-3(#0, #1) = 301473
Step: divide1-4(#2, const_3) = 100491
Program:
add(96454, 101321), multiply(const_1000, 103.698), add(#0, #1), divide(#2, const_3)
Program (Nested):
divide(add(add(96454, 101321), multiply(const_1000, 103.698)), const_3)

Please answer the following financial question based on the context provided. Make sure to give the answer in raw number, not in percentage and without any units. If the question asks for percentage the value should be less than 1
Context:
federal realty investment trust schedule iii summary of real estate and accumulated depreciation 2014continued three years ended december 31 , 2009 reconciliation of accumulated depreciation and amortization ( in thousands ) .
Table
balance december 31 2006                                             | $ 740507        
additions during period 2014depreciation and amortization expense    | 96454           
deductions during period 2014disposition and retirements of property | -80258 ( 80258 )
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    | 103.698         
deductions during period 2014disposition and retirements of property | -11869 ( 11869 )
balance december 31 2009                                             | $ 938087        
.
Question: 
considering the years 2006-2009 , what is the value of the average additions?
Important information:
table_1: balance december 31 2006 the additions during period 2014depreciation and amortization expense of $ 740507 is 96454 ;
table_4: balance december 31 2006 the additions during period 2014depreciation and amortization expense of $ 740507 is 101321 ;
table_7: balance december 31 2006 the additions during period 2014depreciation and amortization expense of $ 740507 is 103.698 ;
Reasoning Steps:
Step: add1-1(96454, 101321) = 197775
Step: multiply1-2(const_1000, 103.698) = 103698
Step: add1-3(#0, #1) = 301473
Step: divide1-4(#2, const_3) = 100491
Program:
add(96454, 101321), multiply(const_1000, 103.698), add(#0, #1), divide(#2, const_3)
Program (Nested):
divide(add(add(96454, 101321), multiply(const_1000, 103.698)), const_3)
