What was the change in other expenses from 2018 to 2019?
{"Employee costs*": {"2017": 18789, "2018": 20980, "2019": 24863}, "Share-based compensation (Note 22)": {"2017": 4565, "2018": 5216, "2019": 5107}, "Other expenses": {"2017": 16496, "2018": 15797, "2019": 17415}, "Total": {"2017": 39850, "2018": 41993, "2019": 47385}}
other_expenses_2019 = df["Other expenses"]["2019"]
other_expenses_2018 = df["Other expenses"]["2018"]
answer = other_expenses_2019 - other_expenses_2018