notes to the consolidated financial statements union pacific corporation and subsidiary companies for purposes of this report , unless the context otherwise requires , all references herein to the 201ccorporation 201d , 201ccompany 201d , 201cupc 201d , 201cwe 201d , 201cus 201d , and 201cour 201d mean union pacific corporation and its subsidiaries , including union pacific railroad company , which will be separately referred to herein as 201cuprr 201d or the 201crailroad 201d .
1 .
nature of operations operations and segmentation 2013 we are a class i railroad operating in the u.s .
our network includes 32236 route miles , linking pacific coast and gulf coast ports with the midwest and eastern u.s .
gateways and providing several corridors to key mexican gateways .
we own 26039 miles and operate on the remainder pursuant to trackage rights or leases .
we serve the western two-thirds of the country and maintain coordinated schedules with other rail carriers for the handling of freight to and from the atlantic coast , the pacific coast , the southeast , the southwest , canada , and mexico .
export and import traffic is moved through gulf coast and pacific coast ports and across the mexican and canadian borders .
the railroad , along with its subsidiaries and rail affiliates , is our one reportable operating segment .
although we provide and analyze revenue by commodity group , we treat the financial results of the railroad as one segment due to the integrated nature of our rail network .
our operating revenues are primarily derived from contracts with customers for the transportation of freight from origin to destination .
effective january 1 , 2018 , the company reclassified its six commodity groups into four : agricultural products , energy , industrial , and premium .
the following table represents a disaggregation of our freight and other revenues: .

Millions
2018
2017
2016
Agricultural Products
$4,469
$4,303
$4,209
Energy
4,608
4,498
3,715
Industrial
5,679
5,204
4,964
Premium
6,628
5,832
5,713
Total freight revenues
$21,384
$19,837
$18,601
Other subsidiary revenues
881
885
814
Accessorial revenues
502
458
455
Other
65
60
71
Total operating revenues
$22,832
$21,240
$19,941

although our revenues are principally derived from customers domiciled in the u.s. , the ultimate points of origination or destination for some products we transport are outside the u.s .
each of our commodity groups includes revenue from shipments to and from mexico .
included in the above table are freight revenues from our mexico business which amounted to $ 2.5 billion in 2018 , $ 2.3 billion in 2017 , and $ 2.2 billion in 2016 .
basis of presentation 2013 the consolidated financial statements are presented in accordance with accounting principles generally accepted in the u.s .
( gaap ) as codified in the financial accounting standards board ( fasb ) accounting standards codification ( asc ) .
2 .
significant accounting policies principles of consolidation 2013 the consolidated financial statements include the accounts of union pacific corporation and all of its subsidiaries .
investments in affiliated companies ( 20% ( 20 % ) to 50% ( 50 % ) owned ) are accounted for using the equity method of accounting .
all intercompany transactions are eliminated .
we currently have no less than majority-owned investments that require consolidation under variable interest entity requirements .
cash , cash equivalents and restricted cash 2013 cash equivalents consist of investments with original maturities of three months or less .
amounts included in restricted cash represent those required to be set aside by contractual agreement. .

Question: Analyse this data from a financial earnings document. what percent of total operating revenues in 2018 were industrial?
Choices:
-0.24873
-17153
1
0.28479
0.24873
Correct choice index: 4