pipeline transportation 2013 we own a system of pipelines through marathon pipe line llc ( 201cmpl 201d ) and ohio river pipe line llc ( 201corpl 201d ) , our wholly-owned subsidiaries . our pipeline systems transport crude oil and refined products primarily in the midwest and gulf coast regions to our refineries , our terminals and other pipeline systems . our mpl and orpl wholly-owned and undivided interest common carrier systems consist of 1737 miles of crude oil lines and 1825 miles of refined product lines comprising 32 systems located in 11 states . the mpl common carrier pipeline network is one of the largest petroleum pipeline systems in the united states , based on total barrels delivered . our common carrier pipeline systems are subject to state and federal energy regulatory commission regulations and guidelines , including published tariffs for the transportation of crude oil and refined products . third parties generated 13 percent of the crude oil and refined product shipments on our mpl and orpl common carrier pipelines in 2009 . our mpl and orpl common carrier pipelines transported the volumes shown in the following table for each of the last three years . pipeline barrels handled ( thousands of barrels per day ) 2009 2008 2007 .
what was the percentage decline in pipeline barrels from 2007 to 2009?
we also own 196 miles of private crude oil pipelines and 850 miles of private refined products pipelines , and we lease 217 miles of common carrier refined product pipelines . we have partial ownership interests in several pipeline companies that have approximately 780 miles of crude oil pipelines and 3600 miles of refined products pipelines , including about 970 miles operated by mpl . in addition , mpl operates most of our private pipelines and 985 miles of crude oil and 160 miles of natural gas pipelines owned by our e&p segment . our major refined product pipelines include the owned and operated cardinal products pipeline and the wabash pipeline . the cardinal products pipeline delivers refined products from kenova , west virginia , to columbus , ohio . the wabash pipeline system delivers product from robinson , illinois , to various terminals in the area of chicago , illinois . other significant refined product pipelines owned and operated by mpl extend from : robinson , illinois , to louisville , kentucky ; garyville , louisiana , to zachary , louisiana ; and texas city , texas , to pasadena , texas . in addition , as of december 31 , 2009 , we had interests in the following refined product pipelines : 2022 65 percent undivided ownership interest in the louisville-lexington system , a petroleum products pipeline system extending from louisville to lexington , kentucky ; 2022 60 percent interest in muskegon pipeline llc , which owns a refined products pipeline extending from griffith , indiana , to north muskegon , michigan ; 2022 50 percent interest in centennial pipeline llc , which owns a refined products system connecting the gulf coast region with the midwest market ; 2022 17 percent interest in explorer pipeline company , a refined products pipeline system extending from the gulf coast to the midwest ; and 2022 6 percent interest in wolverine pipe line company , a refined products pipeline system extending from chicago , illinois , to toledo , ohio . our major owned and operated crude oil lines run from : patoka , illinois , to catlettsburg , kentucky ; patoka , illinois , to robinson , illinois ; patoka , illinois , to lima , ohio ; lima , ohio to canton , ohio ; samaria , michigan , to detroit , michigan ; and st . james , louisiana , to garyville , louisiana . as of december 31 , 2009 , we had interests in the following crude oil pipelines : 2022 51 percent interest in loop llc , the owner and operator of loop , which is the only u.s . deepwater oil port , located 18 miles off the coast of louisiana , and a crude oil pipeline connecting the port facility to storage caverns and tanks at clovelly , louisiana ; 2022 59 percent interest in locap llc , which owns a crude oil pipeline connecting loop and the capline system; .