What was the change in the Interest rate swaps reported in Other current assets between 2018 and 2019?
{"Interest rate swaps reported in Other current assets": {"2019": 82, "2018": 576}, "Interest rate swaps reported in Other assets": {"2019": "$\u2014", "2018": 369}, "Interest rate swaps reported in Other long-term obligations": {"2019": -78, "2018": "$\u2014"}, "Foreign currency hedges reported in Other current assets": {"2019": 580, "2018": 393}}
interest_rate_swaps_2019 = df["Interest rate swaps reported in Other current assets"]["2019"]
interest_rate_swaps_2018 = df["Interest rate swaps reported in Other current assets"]["2018"]
answer = interest_rate_swaps_2019 - interest_rate_swaps_2018