What was the change in trade payables in 2019 from 2018?
{"": {"2019": "\u00a3m", "(Restated) 2018": "\u00a3m"}, "Trade payables": {"2019": 4.3, "(Restated) 2018": 3.7}, "Accruals": {"2019": 10.5, "(Restated) 2018": 9.8}, "Other taxes and social security": {"2019": 13.0, "(Restated) 2018": 11.8}, "Deferred income": {"2019": 13.2, "(Restated) 2018": 1.8}, "Other payables": {"2019": 0.3, "(Restated) 2018": 0.9}, "Accrued interest payable": {"2019": 0.5, "(Restated) 2018": 0.5}, "Total": {"2019": 41.8, "(Restated) 2018": 28.5}}
trade_payables_2019 = df["Trade payables"]["2019"]
trade_payables_2018 = df["Trade payables"]["(Restated) 2018"]
answer = trade_payables_2019 - trade_payables_2018