What was the change in the amount under other benefits in 2021 from 2020?
{"2020": {"Pension Benefits": 83.0, "Other Benefits": 14.7}, "2021": {"Pension Benefits": 82.4, "Other Benefits": 15.1}, "2022": {"Pension Benefits": 82.6, "Other Benefits": 15.1}, "2023": {"Pension Benefits": 82.4, "Other Benefits": 15.1}, "2024": {"Pension Benefits": 81.8, "Other Benefits": 15.1}, "2025-2029": {"Pension Benefits": 395.5, "Other Benefits": 73.1}}
other_benefits_2021 = df["2021"]["Other Benefits"]
other_benefits_2020 = df["2020"]["Other Benefits"]
answer = other_benefits_2021 - other_benefits_2020