pre_text: Other Defined Benefit Plans We maintain various defined benefit plans to provide termination and postretirement benefits to certain eligible employees outside of the U.S. We also provide disability benefits to certain eligible employees in the U.S. Eligibility is determined based on the terms of our plans and local statutory requirements. Funded Status The funded status of our postretirement health care and other defined benefit plans, which is recognized in other long-term liabilities in our consolidated balance sheets, was as follows (in millions):
table: April 26, 2019 April 27, 2018
table: Fair value of plan assets $ 31 $ 25
table: Benefit obligations (61) (53)
table: Unfunded obligations $(30) $(28)
question: Analyse this data from a financial earnings document. What was the change in the fair value of plan assets between 2018 and 2019?