company has a contingent liability relating to proper disposition of these balances , which amounted to $ 1926.8 mil- lion at december 31 , 2007 . as a result of holding these customers 2019 assets in escrow , the company has ongoing programs for realizing economic benefits during the year through favorable borrowing and vendor arrangements with various banks . there were no loans outstanding as of december 31 , 2007 and these balances were invested in short term , high grade investments that minimize the risk to principal . leases the company leases certain of its property under leases which expire at various dates . several of these agreements include escalation clauses and provide for purchases and renewal options for periods ranging from one to five years . future minimum operating lease payments for leases with remaining terms greater than one year for each of the years in the five years ending december 31 , 2012 , and thereafter in the aggregate , are as follows ( in thousands ) : .

83382: 2009: 63060
2010: 35269
2011: 21598
2012: 14860
thereafter: 30869
total: 249038

in addition , the company has operating lease commitments relating to office equipment and computer hardware with annual lease payments of approximately $ 16.0 million per year which renew on a short-term basis . rent expense incurred under all operating leases during the years ended december 31 , 2007 , 2006 and 2005 was $ 106.4 million , $ 81.5 million and $ 61.1 million , respectively . data processing and maintenance services agreements . the company has agreements with various vendors , which expire between 2008 and 2017 , for portions of its computer data processing operations and related functions . the company 2019s estimated aggregate contractual obligation remaining under these agreements was approximately $ 888.3 million as of december 31 , 2007 . however , this amount could be more or less depending on various factors such as the inflation rate , the introduction of significant new technologies , or changes in the company 2019s data processing needs . ( 17 ) employee benefit plans stock purchase plan prior to the certegy merger ( note 6 ) , fis employees participated in the fidelity national financial , inc . employee stock purchase plan ( espp ) . subsequent to the certegy merger , the company instituted its own plan with the same terms as the fidelity national financial , inc . plan . under the terms of both plans and subsequent amendments , eligible employees may voluntarily purchase , at current market prices , shares of fnf 2019s ( prior to the certegy merger ) or fis 2019s ( post certegy merger ) common stock through payroll deductions . pursuant to the espp , employees may contribute an amount between 3% ( 3 % ) and 15% ( 15 % ) of their base salary and certain commissions . shares purchased are allocated to employees based upon their contributions . the company contributes varying matching amounts as specified in the espp . the company recorded an expense of $ 15.2 million , $ 13.1 million and $ 11.1 million , respectively , for the years ended december 31 , 2007 , 2006 and 2005 relating to the participation of fis employees in the espp . fidelity national information services , inc . and subsidiaries and affiliates notes to consolidated and combined financial statements 2014 ( continued ) .

Questions:
what was the rent expense in 2007?
and what was it in 2006?
what was, then, the change over the year?
what was the rent expense in 2006?
and how much does that change represent in relation to this 2006 rent expense, in percentage?

Answers:
106.4
81.5
24.9
81.5
30.6%