Financial report context:
notes to consolidated financial statements 2013 ( continued ) ( amounts in millions , except per share amounts ) guarantees we have guaranteed certain obligations of our subsidiaries relating principally to operating leases and credit facilities of certain subsidiaries . the amount of parent company guarantees on lease obligations was $ 410.3 and $ 385.1 as of december 31 , 2012 and 2011 , respectively , and the amount of parent company guarantees primarily relating to credit facilities was $ 283.4 and $ 327.5 as of december 31 , 2012 and 2011 , 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 , 2012 , there were no material assets pledged as security for such parent company guarantees . contingent acquisition obligations the following table details the estimated future contingent acquisition obligations payable in cash as of december 31 .

Financial table:
2013: deferred acquisition payments; 2014: $ 26.0; 2015: $ 12.4; 2016: $ 9.7; 2017: $ 46.4; thereafter: $ 18.9; total: $ 2.0; column_8: $ 115.4
2013: redeemable noncontrolling interests and call options with affiliates1; 2014: 20.5; 2015: 43.8; 2016: 32.9; 2017: 5.7; thereafter: 2.2; total: 10.6; column_8: 115.7
2013: total contingent acquisition payments; 2014: 46.5; 2015: 56.2; 2016: 42.6; 2017: 52.1; thereafter: 21.1; total: 12.6; column_8: 231.1
2013: less : cash compensation expense included above; 2014: -0.7 ( 0.7 ); 2015: -0.6 ( 0.6 ); 2016: -0.8 ( 0.8 ); 2017: -0.2 ( 0.2 ); thereafter: 0.0; total: 0.0; column_8: -2.3 ( 2.3 )
2013: total; 2014: $ 45.8; 2015: $ 55.6; 2016: $ 41.8; 2017: $ 51.9; thereafter: $ 21.1; total: $ 12.6; column_8: $ 228.8

Additional report context:
1 we have entered into certain acquisitions that contain both redeemable noncontrolling interests and call options with similar terms and conditions . we have certain redeemable noncontrolling interests that are exercisable at the discretion of the noncontrolling equity owners as of december 31 , 2012 . these estimated payments of $ 16.4 are included within the total payments expected to be made in 2013 , and will continue to be carried forward into 2014 or beyond until exercised or expired . redeemable noncontrolling interests are included in the table at current exercise price payable in cash , not at applicable redemption value in accordance with the authoritative guidance for classification and measurement of redeemable securities . the estimated amounts listed would be paid in the event of exercise at the earliest exercise date . see note 6 for further information relating to the payment structure of our acquisitions . all payments are contingent upon achieving projected operating performance targets and satisfying other conditions specified in the related agreements and are subject to revisions as the earn-out periods progress . legal matters we are involved in various legal proceedings , and subject to investigations , inspections , audits , inquiries and similar actions by governmental authorities , arising in the normal course of business . we evaluate all cases each reporting period and record liabilities for losses from legal proceedings when we determine that it is probable that the outcome in a legal proceeding will be unfavorable and the amount , or potential range , of loss can be reasonably estimated . in certain cases , we cannot reasonably estimate the potential loss because , for example , the litigation is in its early stages . while any outcome related to litigation or such governmental proceedings in which we are involved cannot be predicted with certainty , management believes that the outcome of these matters , individually and in the aggregate , will not have a material adverse effect on our financial condition , results of operations or cash flows . note 15 : recent accounting standards impairment of indefinite-lived intangible assets in july 2012 , the financial accounting standards board ( 201cfasb 201d ) issued amended guidance to simplify impairment testing of indefinite-lived intangible assets other than goodwill . the amended guidance permits an entity to first assess qualitative factors to determine whether it is 201cmore likely than not 201d that the indefinite-lived intangible asset is impaired . if , after assessing qualitative factors , an entity concludes that it is not 201cmore likely than not 201d that the indefinite-lived intangible .

Question: what percentage of total estimated future contingent acquisition obligations payable in cash occurred in 2015?
Answer: 18.27