Table:
|  |  | For the year ended December 31, |  |
| --- | --- | --- | --- |
|  | 2017 | 2018 | 2019 |
| Financial Income |  |  |  |
| Interest income | 2,650 | 4,784 | 5,318 |
| Total financial income | 2,650 | 4,784 | 5,318 |
| Financial Costs |  |  |  |
| Amortization and write-off of deferred loan/bond issuance costs/premium | 12,398 | 12,593 | 14,154 |
| Interest expense on loans and realized loss on cash flow hedges | 85,813 | 111,600 | 122,819 |
| Interest expense on bonds and realized loss on CCSs | 27,085 | 30,029 | 34,607 |
| Lease charge | 10,875 | 10,520 | 10,506 |
| Loss arising on bond repurchases at a premium (Note 13)13) | 1,459 | — | 2,119 |
| Other financial costs, including unrealized foreign exchange losses on cash and bonds | 1,551 | 1,885 | 6,276 |
| Total financial costs | 139,181 | 166,627 | 190,481 |
Paragraphs:
GasLog Ltd. and its Subsidiaries
Notes to the consolidated financial statements (Continued)
For the years ended December 31, 2017, 2018 and 2019
(All amounts expressed in thousands of U.S. Dollars, except share and per share data)
19. Financial Income and Costs
An analysis of financial income and costs is as follows:
Question:
What was the percentage change in total financial costs from 2017 to 2019?