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 31974 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 26012 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 review revenue by commodity group , we analyze the net financial results of the railroad as one segment due to the integrated nature of our rail network . the following table provides freight revenue by commodity group : millions 2014 2013 2012 .

Table:
millions | 2014 | 2013 | 2012
agricultural products | $ 3777 | $ 3276 | $ 3280
automotive | 2103 | 2077 | 1807
chemicals | 3664 | 3501 | 3238
coal | 4127 | 3978 | 3912
industrial products | 4400 | 3822 | 3494
intermodal | 4489 | 4030 | 3955
total freight revenues | $ 22560 | $ 20684 | $ 19686
other revenues | 1428 | 1279 | 1240
total operatingrevenues | $ 23988 | $ 21963 | $ 20926
although our revenues are principally derived from customers domiciled in the u.s. , the ultimate points of origination or destination for some products transported by us are outside the u.s .
each of our commodity groups includes revenue from shipments to and from mexico .
included in the above table are revenues from our mexico business which amounted to $ 2.3 billion in 2014 , $ 2.1 billion in 2013 , and $ 1.9 billion in 2012 .
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 and cash equivalents 2013 cash equivalents consist of investments with original maturities of three months or less .
accounts receivable 2013 accounts receivable includes receivables reduced by an allowance for doubtful accounts .
the allowance is based upon historical losses , credit worthiness of customers , and current economic conditions .
receivables not expected to be collected in one year and the associated allowances are classified as other assets in our consolidated statements of financial position. .

Question: what percentage of total freight revenues was the coal commodity group in 2013?
Answer: 18%
Calculation: divide(3978, 21963)