Table:
|  | Combined Pension Plan |  | Post-Retirement Benefit Plans |  |
| --- | --- | --- | --- | --- |
|  | Years Ended December 31, |  | Years Ended December 31, |  |
|  | 2019 | 2018 | 2019 | 2018 |
|  |  | (Dollars in millions) |  |  |
| Benefit obligation | $(12,217) | (11,594) | (3,037) | (2,977) |
| Fair value of plan assets | 10,493 | 10,033 | 13 | 18 |
| Unfunded status | (1,724) | (1,561) | (3,024) | (2,959) |
| Current portion of unfunded status | — | — | (224) | (252) |
| Non-current portion of unfunded status | $(1,724) | (1,561) | (2,800) | (2,707) |
Paragraphs:
Unfunded Status
The following table presents the unfunded status of the Combined Pension Plan and post-retirement benefit plans:
The current portion of our post-retirement benefit obligations is recorded on our consolidated balance sheets in accrued expenses and other current liabilities-salaries and benefits.
Question:
In which year is the fair value of plan assets under post-retirement benefit plans higher?
Answer: Because 18>13, the answer is: 2018.