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 32122 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 26042 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 .
the following table provides freight revenue by commodity group: .

Millions
2017
2016
2015
Agricultural Products
$3,685
$3,625
$3,581
Automotive
1,998
2,000
2,154
Chemicals
3,596
3,474
3,543
Coal
2,645
2,440
3,237
Industrial Products
4,078
3,348
3,808
Intermodal
3,835
3,714
4,074
Total freight revenues
$19,837
$18,601
$20,397
Other revenues
1,403
1,340
1,416
Total operating revenues
$21,240
$19,941
$21,813

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 $ 2.3 billion in 2017 , $ 2.2 billion in 2016 , and $ 2.2 billion in 2015 .
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: Analyse this data from a financial earnings document. what percentage of total freight revenues was the agricultural commodity group in 2017?
Choices:
0.18723
0.00101
5.38318
-0.18576
0.18576
Correct choice index: 4