Financial report context:
future minimum lease commitments for office premises and equipment under non-cancelable leases , along with minimum sublease rental income to be received under non-cancelable subleases , are as follows : period rent obligations sublease rental income net rent .

Financial table:
period: 2008; rent obligations: $ 323.9; sublease rental income: $ -40.9 ( 40.9 ); net rent: $ 283.0
period: 2009; rent obligations: 300.9; sublease rental income: -37.5 ( 37.5 ); net rent: 263.4
period: 2010; rent obligations: 267.7; sublease rental income: -31.0 ( 31.0 ); net rent: 236.7
period: 2011; rent obligations: 233.7; sublease rental income: -25.7 ( 25.7 ); net rent: 208.0
period: 2012; rent obligations: 197.9; sublease rental income: -20.2 ( 20.2 ); net rent: 177.7
period: 2013 and thereafter; rent obligations: 871.0; sublease rental income: -33.1 ( 33.1 ); net rent: 837.9
period: total; rent obligations: $ 2195.1; sublease rental income: $ -188.4 ( 188.4 ); net rent: $ 2006.7

Additional report context:
guarantees we have certain contingent obligations under guarantees of certain of our subsidiaries ( 201cparent company guarantees 201d ) relating principally to credit facilities , guarantees of certain media payables and operating leases . the amount of such parent company guarantees was $ 327.1 and $ 327.9 as of december 31 , 2007 and 2006 , respectively . in the event of non-payment by the applicable subsidiary of the obligations covered by a guarantee , we would be obligated to pay the amounts covered by that guarantee . as of december 31 , 2007 , there are no material assets pledged as security for such parent company guarantees . contingent acquisition obligations we have structured certain acquisitions with additional contingent purchase price obligations in order to reduce the potential risk associated with negative future performance of the acquired entity . in addition , we have entered into agreements that may require us to purchase additional equity interests in certain consolidated and unconsolidated subsidiaries . the amounts relating to these transactions are based on estimates of the future financial performance of the acquired entity , the timing of the exercise of these rights , changes in foreign currency exchange rates and other factors . we have not recorded a liability for these items since the definitive amounts payable are not determinable or distributable . when the contingent acquisition obligations have been met and consideration is determinable and distributable , we record the fair value of this consideration as an additional cost of the acquired entity . however , we recognize deferred payments and purchases of additional interests after the effective date of purchase that are contingent upon the future employment of owners as compensation expense . compensation expense is determined based on the terms and conditions of the respective acquisition agreements and employment terms of the former owners of the acquired businesses . this future expense will not be allocated to the assets and liabilities acquired and is amortized over the required employment terms of the former owners . the following table details the estimated liability with respect to our contingent acquisition obligations and the estimated amount that would be paid under the options , in the event of exercise at the earliest exercise date . all payments are contingent upon achieving projected operating performance targets and satisfying other notes to consolidated financial statements 2014 ( continued ) ( amounts in millions , except per share amounts ) .

Question: what portion of total rent obligations will be paid-off through sublease rental income?
Answer: 8.6%