pre_text: federal realty investment trust schedule iii summary of real estate and accumulated depreciation 2014continued three years ended december 31 , 2006 reconciliation of accumulated depreciation and amortization ( in thousands ) .
post_text: .
table: Balance, December 31, 2003 $514,177
table: Additions during period—depreciation and amortization expense 82,551
table: Deductions during period—disposition and retirements of property (1,390)
table: Balance, December 31, 2004 595,338
table: Additions during period—depreciation and amortization expense 83,656
table: Deductions during period—disposition and retirements of property (15,244)
table: Balance, December 31, 2005 663,750
table: Additions during period—depreciation and amortization expense 89,564
table: Deductions during period—disposition and retirements of property (12,807)
table: Balance, December 31, 2006 $740,507
question: Analyse this data from a financial earnings document. what was the percentual increase in the additions during 2004 and 2005?