The actuary for the pension plan of Gustafson, Inc. calculated the following net gains and losses. incurred During The Year (Gain) or Loss 2020 $ 250,000 2021 (20,000) 2022 100,000 2023 (125.000) 2024 90,000 Other information about the company's pension obligation and plan assets is as follows. As of January 1. PBO Plan Assets 2020 $1,800,000 $ 1,700,000 2021 1.900,000 1,850.000 2022 2.100,000 2,000,000 2023 2.000.000 2.150.000 2024 1.950.000 2.100,000 2024 1,950.000 2.100.000 What is the corridor for 2020 2024 Corridor Year 2020 2021 2022 2023 2024