Pension data for Fahy Transportation Inc. include the following: ($ in millions) Discount rate, 9% Expected return on plan assets, 12% Actual return on plan assets, 13% Projected benefit obligation, January 1 $ 640 Plan assets (fair value), January 1 600 Plan assets (fair value), December 31 660 Benefit payments to retirees, December 31 70 Required: Assuming cash contributions were made at the end of the year, what was the amount of those contributions?