On Jan. 1, 2021, lynx Co. granted 30,000 share options to its employees. The share options will vest at the end of three years provided the employees remain in service until then. The option price is P60 and the entity's share price is also P60 at the date of grant. The par value of the share is P50. At the date of the grant, the entity concluded that the fair value of the share options cannot be estimated reliably. The share options have a life of 6 years. This means that the options can be exercised within three years after vesting. All share options vested at the end of three years and no employee left during the three- year period. The share prices and the number of share options exercised are as follows: End of year Share price Options exercised at year-end 63 2021 2022 66 2023 75 2024 88 2025 90 10,000 15,000 5,000 2026 95 Determine the compensation expense for each year from 2021 to 2026