{"pre_text": ["depreciation and amortization included in operating segment profit for the years ended december 31 , 2008 , 2007 and 2006 was as follows ( in millions ) : ."], "post_text": ["15 .", "leases future minimum rental commitments under non- cancelable operating leases in effect as of december 31 , 2008 were $ 38.2 million for 2009 , $ 30.1 million for 2010 , $ 20.9 million for 2011 , $ 15.9 million for 2012 , $ 14.3 million for 2013 and $ 29.9 million thereafter .", "total rent expense for the years ended december 31 , 2008 , 2007 and 2006 aggregated $ 41.4 million , $ 37.1 million and $ 31.1 million , respectively .", "16 .", "commitments and contingencies intellectual property and product liability-related litigation in july 2008 , we temporarily suspended marketing and distribution of the durom bb acetabular component ( durom cup ) in the u.s .", "to allow us to update product labeling to provide more detailed surgical technique instructions to surgeons and implement a surgical training program in the u.s .", "following our announcement , product liability lawsuits and other claims have been asserted against us , some of which we have settled .", "there are a number of claims still pending and we expect additional claims will be submitted .", "we recorded a provision of $ 47.5 million in the third quarter of 2008 , representing management 2019s estimate of these durom cup-related claims .", "we increased that provision by $ 21.5 million in the fourth quarter of 2008 .", "the provision is limited to revisions within two years of an original surgery that occurred prior to july 2008 .", "these parameters are consistent with our data which indicates that cup loosenings associated with surgical technique are most likely to occur within that time period .", "any claims received outside of these defined parameters will be managed in the normal course and reflected in our standard product liability accruals .", "on february 15 , 2005 , howmedica osteonics corp .", "filed an action against us and an unrelated party in the united states district court for the district of new jersey alleging infringement of u.s .", "patent nos .", "6174934 ; 6372814 ; 6664308 ; and 6818020 .", "on june 13 , 2007 , the court granted our motion for summary judgment on the invalidity of the asserted claims of u.s .", "patent nos .", "6174934 ; 6372814 ; and 6664308 by ruling that all of the asserted claims are invalid for indefiniteness .", "on august 19 , 2008 , the court granted our motion for summary judgment of non- infringement of certain claims of u.s .", "patent no .", "6818020 , reducing the number of claims at issue in the suit to five .", "we continue to believe that our defenses against infringement of the remaining claims are valid and meritorious , and we intend to defend this lawsuit vigorously .", "in addition to certain claims related to the durom cup discussed above , we are also subject to product liability and other claims and lawsuits arising in the ordinary course of business , for which we maintain insurance , subject to self- insured retention limits .", "we establish accruals for product liability and other claims in conjunction with outside counsel based on current information and historical settlement information for open claims , related fees and claims incurred but not reported .", "while it is not possible to predict with certainty the outcome of these cases , it is the opinion of management that , upon ultimate resolution , liabilities from these cases in excess of those recorded , if any , will not have a material adverse effect on our consolidated financial position , results of operations or cash flows .", "government investigations in march 2005 , the u.s .", "department of justice through the u.s .", "attorney 2019s office in newark , new jersey commenced an investigation of us and four other orthopaedic companies pertaining to consulting contracts , professional service agreements and other agreements by which remuneration is provided to orthopaedic surgeons .", "on september 27 , 2007 , we reached a settlement with the government to resolve all claims related to this investigation .", "as part of the settlement , we entered into a settlement agreement with the u.s .", "through the u.s .", "department of justice and the office of inspector general of the department of health and human services ( the 201coig-hhs 201d ) .", "in addition , we entered into a deferred prosecution agreement ( the 201cdpa 201d ) with the u.s .", "attorney 2019s office for the district of new jersey ( the 201cu.s .", "attorney 201d ) and a corporate integrity agreement ( the 201ccia 201d ) with the oig- hhs .", "we did not admit any wrongdoing , plead guilty to any criminal charges or pay any criminal fines as part of the settlement .", "we settled all civil and administrative claims related to the federal investigation by making a settlement payment to the u.s .", "government of $ 169.5 million .", "under the terms of the dpa , the u.s .", "attorney filed a criminal complaint in the u.s .", "district court for the district of new jersey charging us with conspiracy to commit violations of the anti-kickback statute ( 42 u.s.c .", "a7 1320a-7b ) during the years 2002 through 2006 .", "the court deferred prosecution of the criminal complaint during the 18-month term of the dpa .", "the u.s .", "attorney will seek dismissal of the criminal complaint after the 18-month period if we comply with the provisions of the dpa .", "the dpa provides for oversight by a federally-appointed monitor .", "under the cia , which has a term of five years , we agreed , among other provisions , to continue the operation of our enhanced corporate compliance program , designed to promote compliance with federal healthcare program z i m m e r h o l d i n g s , i n c .", "2 0 0 8 f o r m 1 0 - k a n n u a l r e p o r t notes to consolidated financial statements ( continued ) %%transmsg*** transmitting job : c48761 pcn : 060000000 ***%%pcmsg|60 |00012|yes|no|02/24/2009 06:10|0|0|page is valid , no graphics -- color : d| ."], "table": [["", "2008", "2007", "2006"], ["americas", "$ 78.5", "$ 66.9", "$ 56.7"], ["europe", "57.0", "60.7", "46.5"], ["asia pacific", "25.6", "22.7", "18.7"], ["global operations and corporate functions", "114.0", "79.7", "75.5"], ["total", "$ 275.1", "$ 230.0", "$ 197.4"]], "table_ori": [["", "2008", "2007", "2006"], ["Americas", "$78.5", "$66.9", "$56.7"], ["Europe", "57.0", "60.7", "46.5"], ["Asia Pacific", "25.6", "22.7", "18.7"], ["Global operations and corporate functions", "114.0", "79.7", "75.5"], ["Total", "$275.1", "$230.0", "$197.4"]]}

Question: what was the percentage change in total rent expense from 2006 to 2007?
Evidence:
text_3: total rent expense for the years ended december 31 , 2008 , 2007 and 2006 aggregated $ 41.4 million , $ 37.1 million and $ 31.1 million , respectively .
Program: subtract(37.1, 31.1), divide(#0, 31.1)
Answer:
str_answer: 19%
exe_answer: 0.19293