What was the percentage change in the expected payments to U.S. Pension Plans between 2023 and 2024?
{"2020": {"U.S. Pension Plans": 15514, "Non-U.S. Pension Plans": 46, "Post-Retirement Life Insurance Plan": 393}, "2021": {"U.S. Pension Plans": 15399, "Non-U.S. Pension Plans": 54, "Post-Retirement Life Insurance Plan": 377}, "2022": {"U.S. Pension Plans": 15218, "Non-U.S. Pension Plans": 82, "Post-Retirement Life Insurance Plan": 362}, "2023": {"U.S. Pension Plans": 14983, "Non-U.S. Pension Plans": 69, "Post-Retirement Life Insurance Plan": 347}, "2024": {"U.S. Pension Plans": 14706, "Non-U.S. Pension Plans": 84, "Post-Retirement Life Insurance Plan": 332}, "2025-2029": {"U.S. Pension Plans": 68594, "Non-U.S. Pension Plans": 715, "Post-Retirement Life Insurance Plan": 1468}, "Total": {"U.S. Pension Plans": 144414, "Non-U.S. Pension Plans": 1050, "Post-Retirement Life Insurance Plan": 3279}}
us_pension_plans_2024 = df["2024"]["U.S. Pension Plans"]
us_pension_plans_2023 = df["2023"]["U.S. Pension Plans"]
answer = (us_pension_plans_2024 - us_pension_plans_2023) / us_pension_plans_2023 * 100.0