pre_text: Periodic Benefit Costs The aggregate net pension cost recognized in the consolidated statements of operations were costs of $6.5 million and $4.6 million for the years ended December 31, 2019 and 2018, respectively. The following table presents the components of net periodic benefit cost are as follows (in millions): Of the amounts presented above, income of $1.4 million has been included in cost of revenue and loss of $7.9 million included in other comprehensive income for the year ended December 31, 2019, and income of $2.1 million has been included in cost of revenue and loss of $6.7 million included in other comprehensive income for the year ended December 31, 2018.
table: Years Ended December 31,
table: 2019 2018
table: Service cost—benefits earning during the period $- $-
table: Interest cost on projected benefit obligation 5.3 5.3
table: Expected return on assets (6.7) (7.5)
table: Actuarial (gain) loss 7.9 6.7
table: Foreign currency gain (loss) - 0.1
table: Net pension (benefit) cost $ 6.5 $ 4.6
question: Analyse this data from a financial earnings document. What is the increase / (decrease) in the expected return on assets from 2018 to 2019?