| | For the years ended as of December 31, | | |||||||
Costs and expenses by nature | | 2017 | | 2016 | | 2015 | | |||
| | ThCh$ | | ThCh$ | | ThCh$ | | |||
Direct cost | | | 586,223,676 | | | 540,692,964 | | | 485,391,583 | |
Personnel expense (1) | | | 220,858,509 | | | 210,885,553 | | | 197,915,151 | |
Transportation and distribution | | | 235,265,049 | | | 230,047,942 | | | 234,431,464 | |
Advertising and promotion | | | 129,603,036 | | | 105,938,586 | | | 117,921,841 | |
Other expenses | | | 117,992,179 | | | 104,455,411 | | | 100,872,027 | |
Depreciation and amortization | | | 92,199,504 | | | 83,528,045 | | | 81,566,802 | |
Materials and maintenance | | | 46,172,647 | | | 47,102,582 | | | 43,093,939 | |
Energy | | | 25,940,847 | | | 24,444,163 | | | 25,178,032 | |
Leases | | | 15,929,047 | | | 16,294,896 | | | 13,641,122 | |
Total | | | 1,470,184,494 | | | 1,363,390,142 | | | 1,300,011,961 | |
(1) | See Note 25 Employee benefits. |