we have experienced disputes with customers and suppliers 2014such disputes may lead to increased tensions , damaged relationships or litigation which may result in the loss of a key customer or supplier .we have experienced certain conflicts or disputes with some of our customers and service providers .most of these disputes relate to the interpretation of terms in our contracts .while we seek to resolve such conflicts amicably and have generally resolved customer and supplier disputes on commercially reasonable terms , such disputes may lead to increased tensions and damaged relationships between ourselves and these entities , some of whom are key customers or suppliers of ours .in addition , if we are unable to resolve these differences amicably , we may be forced to litigate these disputes in order to enforce or defend our rights .there can be no assurances as to the outcome of these disputes .damaged relationships or litigation with our key customers or suppliers may lead to decreased revenues ( including as a result of losing a customer ) or increased costs , which could have a material adverse effect on us .our operations in australia expose us to changes in foreign currency exchange rates 2014we may suffer losses as a result of changes in such currency exchange rates .we conduct business in the u.s .and australia , which exposes us to fluctuations in foreign currency exchange rates .for the year ended december 31 , 2004 , approximately 7.5% ( 7.5 % ) of our consolidated revenues originated outside the u.s. , all of which were denominated in currencies other than u.s .dollars , principally australian dollars .we have not historically engaged in significant hedging activities relating to our non-u.s .dollar operations , and we may suffer future losses as a result of changes in currency exchange rates .internet access to reports we maintain an internet website at www.crowncastle.com .our annual reports on form 10-k , quarterly reports on form 10-q , and current reports on form 8-k ( and any amendments to those reports filed or furnished pursuant to section 13 ( a ) or 15 ( d ) of the securities exchange act of 1934 ) are made available , free of charge , through the investor relations section of our internet website at http://investor.crowncastle.com/edgar.cfm as soon as reasonably practicable after we electronically file such material with , or furnish it to , the securities and exchange commission .in addition , our corporate governance guidelines , business practices and ethics policy and the charters of our audit committee , compensation committee and nominating & corporate governance committees are available through the investor relations section of our internet website at http://investor.crowncastle.com/edgar.cfm , and such information is also available in print to any shareholder who requests it .item 2 .properties our principal corporate offices are located in houston , texas ; canonsburg , pennsylvania ; and sydney , australia .location property interest ( sq .ft. ) use .
[['location', 'property interest', 'size ( sq . ft. )', 'use'], ['canonsburg pa', 'owned', '124000', 'corporate office'], ['houston tx', 'leased', '24300', 'corporate office'], ['sydney australia', 'leased', '15527', 'corporate office']]
in the u.s. , we also lease and maintain five additional regional offices ( called 201carea offices 201d ) located in ( 1 ) albany , new york , ( 2 ) alpharetta , georgia , ( 3 ) charlotte , north carolina , ( 4 ) louisville , kentucky and ( 5 ) phoenix , arizona .the principal responsibilities of these offices are to manage the leasing of tower space on a local basis , maintain the towers already located in the region and service our customers in the area .as of december 31 , 2004 , 8816 of the sites on which our u.s .towers are located , or approximately 83% ( 83 % ) of our u.s .portfolio , were leased , subleased or licensed , while 1796 or approximately 17% ( 17 % ) were owned in fee or through .

Question: about how many towers were leased or subleased in 2004?
Answer: 7317 towers were leased or subleased in 2004
Explanation: the total number of towers in the us are given in line 24 . to find the amount leased we multiple that by the percentage given in line 25 .