Environment activities
| 2011 | 2012 | 2013 | 2014 | 2015 | |
| Current environmental expenses, including: | 11,151.10 | 12,862.25 | 13,169.96 | 13,535.40 | 11,096.97 |
| protection and sustainable use of water resources | 5,721.80 | 6,598.06 | 5,320.47 | 5,042.74 | 3,758.72 |
| air protection | 593.50 | 1,010.96 | 1,355.32 | 1,358.03 | 1,651.75 |
| environmental (land) protection against industrial and consumer waste | 4,710.80 | 5,253.23 | 5,945.17 | 6,883.83 | 5,686.49 |
| land reclamation | 125.00 | — | 549.00 | 250.80 | — |