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 ) . 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: for the years of 2006 and 2007, what was the combined total of additions, in thousands?
Steps: add(96454, 101321)
Answer: 197775.0
Question: and what were those additions in 2008?
Steps: Ask for number 103.698
Answer: 103.698
Question: including, then, 2008, what becomes that total of additions?
Steps: multiply(const_1000, 103.698)
Answer: 301473.0
Question: and what was the average between the three years?
Steps: add(#0, #1)
Answer: 100491.0
Question: and only between the years of 2007 and 2008, what was the change in the deductions?

Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.
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 ) . 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: for the years of 2006 and 2007, what was the combined total of additions, in thousands?
Steps: add(96454, 101321)
Answer: 197775.0
Question: and what were those additions in 2008?
Steps: Ask for number 103.698
Answer: 103.698
Question: including, then, 2008, what becomes that total of additions?
Steps: multiply(const_1000, 103.698)
Answer: 301473.0
Question: and what was the average between the three years?
Steps: add(#0, #1)
Answer: 100491.0
Question: and only between the years of 2007 and 2008, what was the change in the deductions?
