19. | Short-term Borrowings |
| | December 31, | | |||||
| | 2017 | | | 2016 | | ||
| | (in thousands) | | |||||
Unsecured borrowings | | $ | 3,424,376 | | | | 526,723 | |
Unused credit facility | | $ | 35,866,924 | | | | 33,877,442 | |
Interest rate | | | 3.62%~4.35% | | | | 4.35%~4.39% | |