What was the change in the payments for Charter-in vessels in operation between 2022 and 2023?
{"December 31, 2020": {"Charter-in vessels in operation": 109574, "Land Leases": 556, "Office space": 753}, "December 31, 2021": {"Charter-in vessels in operation": 85399, "Land Leases": 556, "Office space": 356}, "December 31, 2022": {"Charter-in vessels in operation": 57282, "Land Leases": 556, "Office space": 101}, "December 31, 2023": {"Charter-in vessels in operation": 47603, "Land Leases": 556, "Office space": 81}, "December 31, 2024": {"Charter-in vessels in operation": 34025, "Land Leases": 556, "Office space": "\u2014"}, "December 31, 2025 and thereafter": {"Charter-in vessels in operation": 33481, "Land Leases": 23002, "Office space": "\u2014"}, "Total": {"Charter-in vessels in operation": 367364, "Land Leases": 25782, "Office space": 1291}, "Operating lease liabilities, including current portion": {"Charter-in vessels in operation": 304568, "Land Leases": 7660, "Office space": 1204}, "Discount based on incremental borrowing rate": {"Charter-in vessels in operation": 62796, "Land Leases": 18122, "Office space": 87}}
payments_2023 = df["December 31, 2023"]["Charter-in vessels in operation"]
payments_2022 = df["December 31, 2022"]["Charter-in vessels in operation"]
answer = payments_2023 - payments_2022