On January 1, 2018, David Meat Communications granted restricted stock units (RSUs) representing 50 million of its $1 par common shares to executives, subject to forfeiture if employment is terminated within three years. After the recipients of the RSUs satisfy the vesting requirement, the company will distribute the shares. The common shares had a market price of $15 per share on the grant date. At the date of the grant, Most anticipated that 5% of the recipients would leave the firm prior to vesting. On January 1, 2019, 4% of the RSUs are forfeited due to executive turnover. Prepare the appropriate journal entry to record compensation expense on December 31, 2018, December 31, 2019, and December 31, 2020.