Financial report context:
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Financial table:
contractual obligations: long-term obligations excluding capital leases; 2015: 888810; 2016: 753045; 2017: 700608; 2018: 1787451; 2019: 3159286; thereafter: 7188751; total: 14477951
contractual obligations: cash interest expense; 2015: 550000; 2016: 517000; 2017: 485000; 2018: 399000; 2019: 315000; thereafter: 654000; total: 2920000
contractual obligations: capital lease payments ( including interest ); 2015: 15589; 2016: 14049; 2017: 12905; 2018: 12456; 2019: 10760; thereafter: 173313; total: 239072
contractual obligations: total debt service obligations; 2015: 1454399; 2016: 1284094; 2017: 1198513; 2018: 2198907; 2019: 3485046; thereafter: 8016064; total: 17637023
contractual obligations: operating lease payments ( 11 ); 2015: 574438; 2016: 553864; 2017: 538405; 2018: 519034; 2019: 502847; thereafter: 4214600; total: 6903188
contractual obligations: other non-current liabilities ( 12 ) ( 13 ); 2015: 11082; 2016: 20480; 2017: 5705; 2018: 13911; 2019: 4186; thereafter: 1860071; total: 1915435
contractual obligations: total; 2015: $ 2039919; 2016: $ 1858438; 2017: $ 1742623; 2018: $ 2731852; 2019: $ 3992079; thereafter: $ 14090735; total: $ 26455646

Additional report context:
( 1 ) represents anticipated repayment date ; final legal maturity date is march 15 , 2043 . ( 2 ) represents anticipated repayment date ; final legal maturity date is march 15 , 2048 . ( 3 ) in connection with our acquisition of mipt on october 1 , 2013 , we assumed approximately $ 1.49 billion aggregate principal amount of secured notes , $ 250.0 million of which we repaid in august 2014 . the gtp notes have anticipated repayment dates beginning june 15 , 2016 . ( 4 ) assumed in connection with our acquisition of br towers and denominated in brl . the br towers debenture amortizes through october 2023 . the br towers credit facility amortizes through january 15 , ( 5 ) assumed by us in connection with the unison acquisition , and have anticipated repayment dates of april 15 , 2017 , april 15 , 2020 and april 15 , 2020 , respectively , and a final maturity date of april 15 , 2040 . ( 6 ) denominated in mxn . ( 7 ) denominated in zar and amortizes through march 31 , 2020 . ( 8 ) denominated in cop and amortizes through april 24 , 2021 . ( 9 ) reflects balances owed to our joint venture partners in ghana and uganda . the ghana loan is denominated in ghs and the uganda loan is denominated in usd . ( 10 ) on february 11 , 2015 , we redeemed all of the outstanding 4.625% ( 4.625 % ) notes in accordance with the terms thereof . ( 11 ) includes payments under non-cancellable initial terms , as well as payments for certain renewal periods at our option , which we expect to renew because failure to renew could result in a loss of the applicable communications sites and related revenues from tenant leases . ( 12 ) primarily represents our asset retirement obligations and excludes certain other non-current liabilities included in our consolidated balance sheet , primarily our straight-line rent liability for which cash payments are included in operating lease payments and unearned revenue that is not payable in cash . ( 13 ) excludes $ 26.6 million of liabilities for unrecognized tax positions and $ 24.9 million of accrued income tax related interest and penalties included in our consolidated balance sheet as we are uncertain as to when and if the amounts may be settled . settlement of such amounts could require the use of cash flows generated from operations . we expect the unrecognized tax benefits to change over the next 12 months if certain tax matters ultimately settle with the applicable taxing jurisdiction during this timeframe . however , based on the status of these items and the amount of uncertainty associated with the outcome and timing of audit settlements , we are currently unable to estimate the impact of the amount of such changes , if any , to previously recorded uncertain tax positions . off-balance sheet arrangements . we have no material off-balance sheet arrangements as defined in item 303 ( a ) ( 4 ) ( ii ) of sec regulation s-k . interest rate swap agreements . we have entered into interest rate swap agreements to manage our exposure to variability in interest rates on debt in colombia and south africa . all of our interest rate swap agreements have been designated as cash flow hedges and have an aggregate notional amount of $ 79.9 million , interest rates ranging from 5.74% ( 5.74 % ) to 7.83% ( 7.83 % ) and expiration dates through april 2021 . in february 2014 , we repaid the costa rica loan and subsequently terminated the associated interest rate swap agreements . additionally , in connection with entering into the colombian credit facility in october 2014 , we terminated our pre-existing interest rate .

Question: assuming a midpoint interest rate in the range , what would be the annual interest expense on interest rate swap agreements based on the notional amounts , in millions?
Answer: 5.4