on the 4.25% ( 4.25 % ) notes due in 2021 ( 201c2021 notes 201d ) is payable semi-annually on may 24 and november 24 of each year , which commenced november 24 , 2011 , and is approximately $ 32 million per year . the 2021 notes may be redeemed prior to maturity at any time in whole or in part at the option of the company at a 201cmake-whole 201d redemption price . the 2021 notes were issued at a discount of $ 4 million . at december 31 , 2014 , $ 3 million of unamortized debt issuance costs was included in other assets on the consolidated statement of financial condition and are being amortized over the remaining term of the 2021 notes . in may 2011 , in conjunction with the issuance of the 2013 floating rate notes , the company entered into a $ 750 million notional interest rate swapmaturing in 2013 to hedge the future cash flows of its obligation at a fixed rate of 1.03% ( 1.03 % ) . during the second quarter of 2013 , the interest rate swapmatured and the 2013 floating rate notes were fully repaid . 2019 notes . in december 2009 , the company issued $ 2.5 billion in aggregate principal amount of unsecured and unsubordinated obligations . these notes were issued as three separate series of senior debt securities including $ 0.5 billion of 2.25% ( 2.25 % ) notes , which were repaid in december 2012 , $ 1.0 billion of 3.50% ( 3.50 % ) notes , which were repaid in december 2014 at maturity , and $ 1.0 billion of 5.0% ( 5.0 % ) notes maturing in december 2019 ( the 201c2019 notes 201d ) . net proceeds of this offering were used to repay borrowings under the cp program , which was used to finance a portion of the acquisition of barclays global investors ( 201cbgi 201d ) from barclays on december 1 , 2009 ( the 201cbgi transaction 201d ) , and for general corporate purposes . interest on the 2019 notes of approximately $ 50 million per year is payable semi-annually in arrears on june 10 and december 10 of each year . these notes may be redeemed prior to maturity at any time in whole or in part at the option of the company at a 201cmake- whole 201d redemption price . these notes were issued collectively at a discount of $ 5 million . at december 31 , 2014 , $ 3 million of unamortized debt issuance costs was included in other assets on the consolidated statement of financial condition and are being amortized over the remaining term of the 2019 notes . 2017 notes . in september 2007 , the company issued $ 700 million in aggregate principal amount of 6.25% ( 6.25 % ) senior unsecured and unsubordinated notes maturing on september 15 , 2017 ( the 201c2017 notes 201d ) . a portion of the net proceeds of the 2017 notes was used to fund the initial cash payment for the acquisition of the fund-of-funds business of quellos and the remainder was used for general corporate purposes . interest is payable semi-annually in arrears on march 15 and september 15 of each year , or approximately $ 44 million per year . the 2017 notes may be redeemed prior to maturity at any time in whole or in part at the option of the company at a 201cmake-whole 201d redemption price . the 2017 notes were issued at a discount of $ 6 million , which is being amortized over their ten-year term . the company incurred approximately $ 4 million of debt issuance costs , which are being amortized over ten years . at december 31 , 2014 , $ 1 million of unamortized debt issuance costs was included in other assets on the consolidated statement of financial condition . 13 . commitments and contingencies operating lease commitments the company leases its primary office spaces under agreements that expire through 2035 . future minimum commitments under these operating leases are as follows : ( in millions ) .
what percent of future notes are due by 2017?
rent expense and certain office equipment expense under agreements amounted to $ 132 million , $ 137 million and $ 133 million in 2014 , 2013 and 2012 , respectively . investment commitments . at december 31 , 2014 , the company had $ 161 million of various capital commitments to fund sponsored investment funds , including funds of private equity funds , real estate funds , infrastructure funds , opportunistic funds and distressed credit funds . this amount excludes additional commitments made by consolidated funds of funds to underlying third-party funds as third-party noncontrolling interest holders have the legal obligation to fund the respective commitments of such funds of funds . in addition to the capital commitments of $ 161 million , the company had approximately $ 35 million of contingent commitments for certain funds which have investment periods that have expired . generally , the timing of the funding of these commitments is unknown and the commitments are callable on demand at any time prior to the expiration of the commitment . these unfunded commitments are not recorded on the consolidated statements of financial condition . these commitments do not include potential future commitments approved by the company that are not yet legally binding . the company intends to make additional capital commitments from time to time to fund additional investment products for , and with , its clients . contingencies contingent payments . the company acts as the portfolio manager in a series of derivative transactions and has a maximum potential exposure of $ 17 million under a derivative between the company and counterparty . see note 7 , derivatives and hedging , for further discussion . contingent payments related to business acquisitions . in connection with the credit suisse etf transaction , blackrock is required to make contingent payments annually to credit suisse , subject to achieving specified thresholds during a seven-year period , subsequent to the 2013 acquisition date . in addition , blackrock is required to make contingent payments related to the mgpa transaction during a five-year period , subject to achieving specified thresholds , subsequent to the 2013 acquisition date . the fair value of the remaining contingent payments at december 31 , 2014 is not significant to the consolidated statement of financial condition and is included in other liabilities . legal proceedings . from time to time , blackrock receives subpoenas or other requests for information from various u.s . federal , state governmental and domestic and .