|
|
|
Year ended December 31 |
|
||||
|
|
|
2017 |
|
2016 |
|
2015 |
|
|
Personnel |
|
2,295 |
|
2,087 |
|
2,092 |
|
|
Materials and services |
|
3,814 |
|
3,108 |
|
2,954 |
|
|
Fuel oil and gas |
|
1,313 |
|
1,233 |
|
1,207 |
|
|
Maintenance |
|
3,096 |
|
2,747 |
|
2,518 |
|
|
Energy |
|
963 |
|
694 |
|
482 |
|
|
Acquisition of products |
|
543 |
|
511 |
|
829 |
|
|
Depreciation and depletion |
|
3,484 |
|
3,267 |
|
3,236 |
|
|
Freight |
|
3,346 |
|
2,509 |
|
3,496 |
|
|
Others |
|
2,185 |
|
1,494 |
|
1,937 |
|
|
|
|
|
|
|
|
|
|
|
Total |
|
21,039 |
|
17,650 |
|
18,751 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cost of goods sold |
|
20,426 |
|
17,148 |
|
18,233 |
|
|
Cost of services rendered |
|
613 |
|
502 |
|
518 |
|
|
|
|
|
|
|
|
|
|
|
Total |
|
21,039 |
|
17,650 |
|
18,751 |
|
|
|
|
|
|
|
|
|
|