What is the change in Interest expense on Term Loans between December 31, 2018 and 2019?
{"Interest expense on Term Loans": {"2019": 8073, "2018": 101087}, "Amortization of debt issuance costs": {"2019": 5685, "2018": 16308}, "Other interest expense ": {"2019": 2120, "2018": 6949}, "Total interest expense, net": {"2019": 15878, "2018": 124344}}
interest_expense_2019 = df["Interest expense on Term Loans"]["2019"]
interest_expense_2018 = df["Interest expense on Term Loans"]["2018"]
answer = interest_expense_2019 - interest_expense_2018