notes to the consolidated financial statements the credit agreement provides that loans will bear interest at rates based , at the company 2019s option , on one of two specified base rates plus a margin based on certain formulas defined in the credit agreement . additionally , the credit agreement contains a commitment fee on the amount of unused commitment under the credit agreement ranging from 0.125% ( 0.125 % ) to 0.625% ( 0.625 % ) per annum . the applicable interest rate and the commitment fee will vary depending on the ratings established by standard & poor 2019s financial services llc and moody 2019s investor service inc . for the company 2019s non-credit enhanced , long- term , senior , unsecured debt . the credit agreement contains usual and customary restrictive covenants for facilities of its type , which include , with specified exceptions , limitations on the company 2019s ability to create liens or other encumbrances , to enter into sale and leaseback transactions and to enter into consolidations , mergers or transfers of all or substantially all of its assets . the credit agreement also requires the company to maintain a ratio of total indebtedness to total capitalization , as defined in the credit agreement , of sixty percent or less . the credit agreement contains customary events of default that would permit the lenders to accelerate the repayment of any loans , including the failure to make timely payments when due under the credit agreement or other material indebtedness , the failure to satisfy covenants contained in the credit agreement , a change in control of the company and specified events of bankruptcy and insolvency . there were no amounts outstanding under the credit agreement at december 31 , on november 12 , 2010 , ppg completed a public offering of $ 250 million in aggregate principal amount of its 1.900% ( 1.900 % ) notes due 2016 ( the 201c2016 notes 201d ) , $ 500 million in aggregate principal amount of its 3.600% ( 3.600 % ) notes due 2020 ( the 201c2020 notes 201d ) and $ 250 million in aggregate principal amount of its 5.500% ( 5.500 % ) notes due 2040 ( the 201c2040 notes 201d ) . these notes were issued pursuant to an indenture dated as of march 18 , 2008 ( the 201coriginal indenture 201d ) between the company and the bank of new york mellon trust company , n.a. , as trustee ( the 201ctrustee 201d ) , as supplemented by a first supplemental indenture dated as of march 18 , 2008 between the company and the trustee ( the 201cfirst supplemental indenture 201d ) and a second supplemental indenture dated as of november 12 , 2010 between the company and the trustee ( the 201csecond supplemental indenture 201d and , together with the original indenture and the first supplemental indenture , the 201cindenture 201d ) . the company may issue additional debt from time to time pursuant to the original indenture . the indenture governing these notes contains covenants that limit the company 2019s ability to , among other things , incur certain liens securing indebtedness , engage in certain sale-leaseback transactions , and enter into certain consolidations , mergers , conveyances , transfers or leases of all or substantially all the company 2019s assets . the terms of these notes also require the company to make an offer to repurchase notes upon a change of control triggering event ( as defined in the second supplemental indenture ) at a price equal to 101% ( 101 % ) of their principal amount plus accrued and unpaid interest . cash proceeds from this notes offering was $ 983 million ( net of discount and issuance costs ) . the discount and issuance costs related to these notes , which totaled $ 17 million , will be amortized to interest expense over the respective terms of the notes . ppg 2019s non-u.s . operations have uncommitted lines of credit totaling $ 791 million of which $ 31 million was used as of december 31 , 2010 . these uncommitted lines of credit are subject to cancellation at any time and are generally not subject to any commitment fees . short-term debt outstanding as of december 31 , 2010 and 2009 , was as follows : ( millions ) 2010 2009 20ac650 million revolving credit facility , 0.8% ( 0.8 % ) as of dec . 31 , 2009 $ 2014 $ 110 other , weighted average 3.39% ( 3.39 % ) as of dec . 31 , 2010 and 2.2% ( 2.2 % ) as of december 31 , 2009 24 158 total $ 24 $ 268 ppg is in compliance with the restrictive covenants under its various credit agreements , loan agreements and indentures . the company 2019s revolving credit agreements include a financial ratio covenant . the covenant requires that the amount of total indebtedness not exceed 60% ( 60 % ) of the company 2019s total capitalization excluding the portion of accumulated other comprehensive income ( loss ) related to pensions and other postretirement benefit adjustments . as of december 31 , 2010 , total indebtedness was 45% ( 45 % ) of the company 2019s total capitalization excluding the portion of accumulated other comprehensive income ( loss ) related to pensions and other postretirement benefit adjustments . additionally , substantially all of the company 2019s debt agreements contain customary cross- default provisions . those provisions generally provide that a default on a debt service payment of $ 10 million or more for longer than the grace period provided ( usually 10 days ) under one agreement may result in an event of default under other agreements . none of the company 2019s primary debt obligations are secured or guaranteed by the company 2019s affiliates . interest payments in 2010 , 2009 and 2008 totaled $ 189 million , $ 201 million and $ 228 million , respectively . 2010 ppg annual report and form 10-k 43 .

2010: 20ac650 million revolving credit facility 0.8% ( 0.8 % ) as of dec . 31 2009: 2014
other weighted average 3.39% ( 3.39 % ) as of dec . 31 2010 and 2.2% ( 2.2 % ) as of december 31 2009: 24
total: 24
2009: 20ac650 million revolving credit facility 0.8% ( 0.8 % ) as of dec . 31 2009: 110
other weighted average 3.39% ( 3.39 % ) as of dec . 31 2010 and 2.2% ( 2.2 % ) as of december 31 2009: 158
total: 268

notes to the consolidated financial statements the credit agreement provides that loans will bear interest at rates based , at the company 2019s option , on one of two specified base rates plus a margin based on certain formulas defined in the credit agreement . additionally , the credit agreement contains a commitment fee on the amount of unused commitment under the credit agreement ranging from 0.125% ( 0.125 % ) to 0.625% ( 0.625 % ) per annum . the applicable interest rate and the commitment fee will vary depending on the ratings established by standard & poor 2019s financial services llc and moody 2019s investor service inc . for the company 2019s non-credit enhanced , long- term , senior , unsecured debt . the credit agreement contains usual and customary restrictive covenants for facilities of its type , which include , with specified exceptions , limitations on the company 2019s ability to create liens or other encumbrances , to enter into sale and leaseback transactions and to enter into consolidations , mergers or transfers of all or substantially all of its assets . the credit agreement also requires the company to maintain a ratio of total indebtedness to total capitalization , as defined in the credit agreement , of sixty percent or less . the credit agreement contains customary events of default that would permit the lenders to accelerate the repayment of any loans , including the failure to make timely payments when due under the credit agreement or other material indebtedness , the failure to satisfy covenants contained in the credit agreement , a change in control of the company and specified events of bankruptcy and insolvency . there were no amounts outstanding under the credit agreement at december 31 , on november 12 , 2010 , ppg completed a public offering of $ 250 million in aggregate principal amount of its 1.900% ( 1.900 % ) notes due 2016 ( the 201c2016 notes 201d ) , $ 500 million in aggregate principal amount of its 3.600% ( 3.600 % ) notes due 2020 ( the 201c2020 notes 201d ) and $ 250 million in aggregate principal amount of its 5.500% ( 5.500 % ) notes due 2040 ( the 201c2040 notes 201d ) . these notes were issued pursuant to an indenture dated as of march 18 , 2008 ( the 201coriginal indenture 201d ) between the company and the bank of new york mellon trust company , n.a. , as trustee ( the 201ctrustee 201d ) , as supplemented by a first supplemental indenture dated as of march 18 , 2008 between the company and the trustee ( the 201cfirst supplemental indenture 201d ) and a second supplemental indenture dated as of november 12 , 2010 between the company and the trustee ( the 201csecond supplemental indenture 201d and , together with the original indenture and the first supplemental indenture , the 201cindenture 201d ) . the company may issue additional debt from time to time pursuant to the original indenture . the indenture governing these notes contains covenants that limit the company 2019s ability to , among other things , incur certain liens securing indebtedness , engage in certain sale-leaseback transactions , and enter into certain consolidations , mergers , conveyances , transfers or leases of all or substantially all the company 2019s assets . the terms of these notes also require the company to make an offer to repurchase notes upon a change of control triggering event ( as defined in the second supplemental indenture ) at a price equal to 101% ( 101 % ) of their principal amount plus accrued and unpaid interest . cash proceeds from this notes offering was $ 983 million ( net of discount and issuance costs ) . the discount and issuance costs related to these notes , which totaled $ 17 million , will be amortized to interest expense over the respective terms of the notes . ppg 2019s non-u.s . operations have uncommitted lines of credit totaling $ 791 million of which $ 31 million was used as of december 31 , 2010 . these uncommitted lines of credit are subject to cancellation at any time and are generally not subject to any commitment fees . short-term debt outstanding as of december 31 , 2010 and 2009 , was as follows : ( millions ) 2010 2009 20ac650 million revolving credit facility , 0.8% ( 0.8 % ) as of dec . 31 , 2009 $ 2014 $ 110 other , weighted average 3.39% ( 3.39 % ) as of dec . 31 , 2010 and 2.2% ( 2.2 % ) as of december 31 , 2009 24 158 total $ 24 $ 268 ppg is in compliance with the restrictive covenants under its various credit agreements , loan agreements and indentures . the company 2019s revolving credit agreements include a financial ratio covenant . the covenant requires that the amount of total indebtedness not exceed 60% ( 60 % ) of the company 2019s total capitalization excluding the portion of accumulated other comprehensive income ( loss ) related to pensions and other postretirement benefit adjustments . as of december 31 , 2010 , total indebtedness was 45% ( 45 % ) of the company 2019s total capitalization excluding the portion of accumulated other comprehensive income ( loss ) related to pensions and other postretirement benefit adjustments . additionally , substantially all of the company 2019s debt agreements contain customary cross- default provisions . those provisions generally provide that a default on a debt service payment of $ 10 million or more for longer than the grace period provided ( usually 10 days ) under one agreement may result in an event of default under other agreements . none of the company 2019s primary debt obligations are secured or guaranteed by the company 2019s affiliates . interest payments in 2010 , 2009 and 2008 totaled $ 189 million , $ 201 million and $ 228 million , respectively . 2010 ppg annual report and form 10-k 43 .

Questions:
what was the total interest payment in 2010?
what was the total interest payment in 2009?
what is the effective rate?
what is the estimated interest expense in 2011?

Answers:
189
201
94%
177.7