| | Leasehold
Improvements | Equipment | Total 2017 | Total 2016 |
Book value as at 1 January | 587 | 149 | 736 | 892 |
Investments | 75 | 303 | 378 | 152 |
Depreciations | (453) | (228) | (681) | (308) |
Book value as at 31 December | 209 | 224 | 433 | 736 |
| | | | | |
Purchase value | 5,717 | 1,516 | 7,233 | 6,855 |
Cumulative depreciations | (5,508) | (1,292) | (6,800) | (6,119) |
Book value as at 31 December | 209 | 224 | 433 | 736 |