pre_text: 5 . commitments and contingencies rental expense related to office , warehouse space and real estate amounted to $ 608 , $ 324 , and $ 281 for the years ended december 25 , 2004 , december 27 , 2003 , and december 28 , 2002 , respectively . future minimum lease payments are as follows : at december 25 , 2004 , the company expects future costs of approximately $ 900 for the completion of its facility expansion in olathe , kansas . certain cash balances of gel are held as collateral by a bank securing payment of the united kingdom value-added tax requirements . these amounted to $ 1457 and $ 1602 at december 25 , 2004 and december 27 , 2003 , respectively , and are reported as restricted cash . in the normal course of business , the company and its subsidiaries are parties to various legal claims , actions , and complaints , including matters involving patent infringement and other intellectual property claims and various other risks . it is not possible to predict with certainty whether or not the company and its subsidiaries will ultimately be successful in any of these legal matters , or if not , what the impact might be . however , the company 2019s management does not expect that the results in any of these legal proceedings will have a material adverse effect on the company 2019s results of operations , financial position or cash flows . 6 . employee benefit plans gii sponsors an employee retirement plan under which its employees may contribute up to 50% ( 50 % ) of their annual compensation subject to internal revenue code maximum limitations and to which gii contributes a specified percentage of each participant 2019s annual compensation up to certain limits as defined in the plan . additionally , gel has a defined contribution plan under which its employees may contribute up to 5% ( 5 % ) of their annual compensation . both gii and gel contribute an amount determined annually at the discretion of the board of directors . during the years ended december 25 , 2004 , december 27 , 2003 , and december 28 , 2002 , expense related to these plans of $ 5183 , $ 4197 , and $ 2728 , respectively , was charged to operations . certain of the company 2019s foreign subsidiaries participate in local defined benefit pension plans . contributions are calculated by formulas that consider final pensionable salaries . neither obligations nor contributions for the years ended december 25 , 2004 , december 27 , 2003 , and december 28 , 2002 were significant. .
post_text: .
table: Year Amount
table: 2005 $512
table: 2006 493
table: 2007 493
table: 2008 474
table: 2009 474
table: Thereafter 3,452
question: Analyse this data from a financial earnings document. what is the increase in expense related to office , warehouse space , and real estate during 2003 and 2004?