Date,Bakken,Marcellus,Eagle Ford,Delaware,Midland
2006,5776908,5584445,6371018,5515230,6468886
2007,5857471,5704229,6480635,5510756,6595833
2008,6843903,6512300,7361318,6421377,7403136
2009,6157368,5930285,6640619,5687624,6904539
2010,6749662,6589575,7281345,6162356,7508067
2011,8030054,7755962,8679948,7494647,9168629
2012,8405120,7974352,9115407,8276150,9830247
2013,7345996,6940183,7890165,6947454,8251422
2014,6737275,6352111,7264257,6259088,7362263
2015,6215936,5935709,6779348,5689734,6782157